JPH02161497A - Automatic accompaniment device - Google Patents

Abstract

PURPOSE:To eliminate the need for assigning melody timbres each time according to the selection of accompaniment patterns by reading the melody timbre assignment data corresponding to the selected accompaniment patterns out of a melody timbre memory means and assigning the melody accompaniment pattern timbres at the time of melody performance. CONSTITUTION:An automatic accompaniment control means 101 reads the corresponding accompaniment patterns from an accompaniment pattern memory means 106 when the accompaniment patterns for a player to make automatic accompaniment are selected by an accompaniment pattern selecting means 105. The automatic accompaniment is executed in accordance therewith. The player can make melody performance as desired by a melody performance means 104 simultaneously therewith and in this case, a melody timbre control means reads the melody timbre assignment data from a melody timbre memory means 113 and assigns the same to the melody performance means 104 every time when the accompaniment patterns are selected. The need for the player to assign the melody timbres each time according to the selection of the accompaniment patterns is eliminated in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic accompaniment device for an electronic musical instrument that allows a performer to easily specify a melody tone.

[Conventional technology]

With the spread of electronic musical instruments such as electronic keyboards, electronic wind instruments, and electronic stringed instruments, it has become possible to easily enjoy playing with a variety of musical tones. It has become easy to obtain.

Furthermore, many electronic musical instruments equipped with automatic accompaniment devices have been developed in order to obtain a wide variety of performance effects with simple operations.

In this case, automatic accompaniment can be performed using rhythm instrument sounds, bass and chord accompaniment, etc., which enhance musical expressiveness.

Here, in an automatic accompaniment device that performs automatic accompaniment by combining automatic accompaniment using rhythm instrument sounds and automatic accompaniment using bass chord accompaniment, the timing at which the rhythm sounds are generated is, for example, 16 steps (corresponding to a 16th note). Patterns to be paired (hereinafter referred to as rhythm patterns)
1 is determined by In other words, ■ Specify whether or not to generate rhythm sounds for each step, read out the 16-step rhythm pattern sequentially at a constant tempo, and determine and control whether or not to generate rhythm sounds for each step. By controlling the sound generation timing and playing the sound while repeatedly reading out the above 16 steps, a musically rhythmic accompaniment effect can be obtained. Note that a plurality of rhythm sounds may be prepared, and in this case, the above control is performed independently for the plurality of rhythm sounds. Furthermore, the timing at which the chord tones are sounded is similarly specified by a pattern (hereinafter referred to as a chord pattern) consisting of, for example, 16 steps, which is independent of the rhythm pattern, and the timing at which the chord tones are sounded is controlled. That's fine.

Furthermore, the timing at which the bass sound is produced is also independent of the rhythm pattern and chord pattern, for example, 16.
The sound generation timing of the bass sound may be controlled based on a pattern having one set of steps (hereinafter referred to as a base pattern).

At this time, the chord progression of the chord tones sounded in the above chord pattern is usually determined by the performer using a specific w! This is performed at any time using the accompaniment key (hereinafter referred to as the accompaniment key). In addition, chord progression data indicating each chord progression is stored in the memory in advance, and by automatically specifying chords as the chord pattern progresses based on this data, the performer can enjoy automatic accompaniment more easily. There are also automatic accompaniment devices that allow you to do this. The designation of the bass progression of the bass notes sounded in the bass pattern, that is, how to designate the bass pitch according to the progression of the song, depends on the root of the chord type specified in each of the chord progression data above. Specify as the pitch of the sound.

Note that one set of the above-mentioned rhythm pattern, chord pattern, bass pattern, and chord progression may be prepared for each accompaniment pattern such as rock, waltz, march, etc., and the performer may arbitrarily select one set.

The performer can freely enjoy playing the melody using automatic accompaniment and specific key areas other than the accompaniment keys (hereinafter referred to as melody keys).

[Problem to be solved by the invention]

Usually, a more effective performance can be achieved by changing the melody tone depending on the accompaniment pattern, such as rock, waltz, march, etc. Also, within the progression of one accompaniment pattern,
You can perform more effectively by changing the melody tone depending on the situation.

However, in the conventional example, when the performer selects the accompaniment pattern, he or she must manually select the melody tone. Furthermore, even within a single accompaniment pattern, the melody tone must be changed manually each time. For this reason, when the number of accompaniment patterns increases, it becomes difficult for the performer to judge which melody tone matches which accompaniment pattern, and this poses the problem of not being able to enjoy simple automatic accompaniment. have.

An object of the present invention is to enable even beginners to easily specify melody tones, and thereby to realize automatic accompaniment as expected by the performer.

[Means for Solving the Problems] The present invention provides automatic accompaniment that performs automatic accompaniment by generating rhythm tones, bass tones, or chord tones based on accompaniment patterns such as rhythm patterns, bass patterns, or chord patterns, and chord progression data. equipment is assumed. Here, the rhythm pattern is a pattern in which, for example, 16 steps (corresponding to a 16th note) are 1&l, for specifying the timing at which rhythm sounds are to be produced. Then, in the rhythm pattern, it is specified whether or not to generate a rhythm sound for each step, and this 16-step rhythm pattern is sequentially read out at a constant tempo, and it is determined and controlled whether or not to generate a sound for each step. While controlling the sound generation timing of the rhythm tones, automatic accompaniment using the rhythm tones is performed while repeatedly reading out the above 16 steps. Similarly, the chord pattern is a pattern that is independent of the rhythm pattern and is made up of, for example, 16 steps, and is used to specify the timing at which chord tones are sounded, and the timing at which the chord tones are sounded is controlled based on this pattern.

Furthermore, the bass pattern is also a pattern that is independent of the rhythm pattern and chord pattern and is made up of a set of 16 steps, for example, to specify the timing at which the bass sound is produced, and based on this pattern, the timing at which the bass sound is produced is determined. control.

In addition, the chord progression data is data that specifies chord types, and specifies the types of chord tones and bass tones produced by the chord pattern and bass pattern sequentially over time.

In the automatic accompaniment device, the accompaniment pattern storage means includes:
It is a means for storing a plurality of sets of accompaniment patterns such as the rhythm pattern, bass pattern, chord pattern, or chord progression data for each type of accompaniment such as rock, waltz, march, etc.

The accompaniment pattern selection means is means for allowing the performer to select one of the plurality of accompaniment patterns.

The means is, for example, an accompaniment pattern selection switch.

The automatic accompaniment control means is means for reading out the accompaniment pattern selected by the selection means from the accompaniment pattern storage means and performing automatic accompaniment. In this case, for example, when the performer selects an accompaniment pattern using the accompaniment pattern selection means,
At the same time, automatic accompaniment is started.

The melody playing means is a means for causing the performer to play a melody in parallel with the automatic accompaniment.

The melody timbre storage means is a means for storing melody timbre designation data corresponding to each of the plurality of sets of accompaniment patterns. Alternatively, it is means for storing melody tone designation data corresponding to each scene of the progression of each of the accompaniment patterns.

The melody timbre control means reads melody timbre designation data corresponding to the accompaniment pattern selected by the accompaniment pattern selection means from the melody timbre storage means, and uses the melody timbre designation data to select a melody when the melody is played by the melody playing means. This is a means of specifying a tone. Alternatively, according to the progress of the automatic accompaniment by the automatic accompaniment control means, corresponding melody tone specification data is read from the melody tone storage means, and the melody tone specification data is used to specify the melody tone when the melody is played by the melody playing means. This is a means to perform the steps sequentially.

[For production] The effects of the present invention are as follows.

When the performer selects an accompaniment pattern for performing automatic accompaniment from among types such as rock, waltz, march, etc. using the accompaniment pattern selection means, the automatic accompaniment control means reads out the corresponding accompaniment pattern from the accompaniment pattern storage means. , automatic accompaniment is performed based on this.

At the same time, the performer can perform any melody using the melody playing means; in this case, each time an accompaniment pattern is selected, the melody tone control means reads out the corresponding melody tone specification data from the melody tone storage means. ,
Set as melody playing method.

Therefore, the performer does not need to specify the melody tone one by one depending on the accompaniment pattern selection.

Furthermore, when performing automatic accompaniment according to an accompaniment pattern with an automatic accompaniment control means, the corresponding melody tone specification data is read from the melody tone storage means according to the progress of the automatic accompaniment, and the melody tone is specified when the melody is played by the melody playing means. Perform sequentially.

Therefore, the performer does not need to specify the melody tone one by one as the automatic accompaniment progresses.

Note that, for example, if the player selects an accompaniment pattern using the accompaniment pattern selection means and simultaneously starts the automatic accompaniment, the operation at the time of starting the automatic accompaniment can be simplified.

〔Example〕

(1 rattan ± long nail,) FIG. 1 is a block diagram of an embodiment of the present invention.

A central control unit (CPU, hereinafter the same) 1 is a control device that controls the overall operation, and has a flag counter register group (FCR, the same hereinafter) 1011 inside.

The CPUl0I has a keyboard section 104 and a sui-sochi section 105.
, pattern memory section 106, chord progression memory section 107
, auto-operation engine memory fJfj, 113, code judge section 108 and timer clock generator 10
2 is connected. Additionally, the timer clock generator 102
A rhythm counter (the same goes for RC1 and below) 103 is connected which counts up by +1 based on a timer clock from RC1. The CPU O1 includes a melody sound generation section 109, an accompaniment sound generation section 110, and a rhythm sound generation section 11.
1 to emit musical tones via the sound system 112.

The melody sound generation section 109, the accompaniment sound generation section 110, and the rhythm sound generation section 111, as illustrated in the accompaniment sound generation section 11O, determine, for example, the pitch and the fundamental waveform of the generated musical tone.
CO (Digital controlled Osci
llator) 1101, an envelope generator 1102 that determines temporal changes in its characteristics, and DCOllo
D CW (
DtgiLal Controlled Wave)
1103, an envelope generator 1104 that determines temporal changes in its timbre characteristics, and a DC
italControlled Amplifier)
1105, an envelope generator 1106, etc. that determines temporal changes in the volume characteristics, and by changing parameters given to the envelope generators 1102, 1104, 1106, etc., various musical sound waveforms can be generated. Note that the configuration is not limited to the above configuration, and for example, the rhythm sound generation unit 111 stores the musical sound waveform of an actual rhythm instrument in a memory, and reads and outputs it in synchronization with a rhythm pattern to be described later. A PCM sound source type configuration may also be used.

The sound system 112 includes a melody sound generator 109,
It is a means for amplifying musical sound waveforms output from the accompaniment sound generating section 110 and the rhythm sound generating section 111 and emitting the sound, and is, for example, an amplifier, a speaker, or the like.

FIG. 2 shows the appearance of the keyboard section 104 shown in FIG. 1.

As shown in the figure, it is composed of a plurality of keys 1041, and in this embodiment, it generates a scale for one five octave from 02 of the 0 octave (OC=O) to 07 of the 5 octave (OC=5). can. Of these, accompaniment t! from 02 to B3!
1042 functions as a key for specifying a normal scale during normal performance, but functions as a key for specifying a chord in a normal mode during automatic accompaniment, which will be described later.

Also, adjacent to the keyboard section 104, the switch section 1 of FIG.
05 are arranged as shown in FIG.

The switch section 105 is a group of switches for making various settings during automatic accompaniment.

Rhythm switch (hereinafter referred to as SW) 105
1 consists of six switches #1 to #6, and by pressing any one of them, the rhythm during automatic accompaniment can be specified. In this case, each rhythm of rock, waltz, march, samba, folk, fusion, etc. is assigned to each rhythm 5W1051 from #1 to #6, for example.

The auto chord progression 5W1052 is a switch for specifying an auto chord progression mode, which will be described later, and when this is pressed, the LED above it lights up.

Start 5W1054 and stop 5W1055 are switches for starting and stopping automatic accompaniment.

Intro 5W1053, fill-in 5W1056, and ending SWI 057 are switches for starting intro performance, fill-in performance, and ending performance, respectively.

Tempo up SW105 B and tempo down 5W10
59 are switches for increasing and decreasing the tempo of automatic accompaniment, respectively.

The tone color changeover switch 1060 is a switch for switching between melody and tone color (in the figure, three tones #1 to #3 can be selected).

Auto operation mode 5W1061 is a switch for specifying auto operation mode, which will be described later.
When this is pressed, the LED above it lights up.

(Busei Kanka General Seijutate) First, the general operation of the embodiment having the above configuration will be explained.

First, during normal performance without automatic accompaniment, key information Kl shown in FIG. 4 is input from the keyboard section 104 of FIG. 1.

Key information KI is 0N10FF information OF indicating key press/release.
, a key code KC indicating one of the 12 scales, and an octave code OC indicating the octave. Then, any key 1041 (third
When the key (FIG.) is pressed, the CPU 10I generates pitch information corresponding to the pressed key based on the key code KC and octave code OC, and supplies it to the melody sound generating section 109. As a result, the melody sound generating section 109 generates a melody sound based on the pitch information, and the sound is emitted via the sound system 112.

Next, during automatic accompaniment, it is possible to specify two types: normal mode and auto chord progression mode.

First, in the normal mode, the performer can select one of six types of rhythms such as rock, waltz, etc. After that, when automatic accompaniment is started, the first
The rhythm accompaniment sound generation unit 111 shown in the figure starts producing rhythm accompaniment sounds using a plurality of rhythm instrument sounds in a rhythm pattern consisting of 16 independent steps for each rhythm instrument sound, and is repeated.

In this case, 16 steps correspond to, for example, one measure on the musical score, and therefore, for example, the same rhythm pattern is repeated for each measure.

In this state, the player presses the keyboard section 104 in FIG. 1 or 2.
By pressing any accompaniment key 1042 between 02 and B3, the accompaniment sound generating section 110 in FIG.
With a bass pattern consisting of six steps, accompaniment tones based on a predetermined bass tone are started and repeated. At the same time, the accompaniment sound generating section 110 of FIG. Accompaniment tones based on a chord consisting of four tones are started and repeated.

In this way, in the normal mode, if a rock rhythm is selected, for example, in addition to the rhythm accompaniment of the rock rhythm pattern using a plurality of rhythm instrument sounds, the chord tones specified by the performer with the accompaniment key 1042 in FIG. Based on the bass accompaniment of the rock bass pattern and bass tone, and the chord accompaniment of the rock chord pattern and chord tone,
Automatic accompaniment can be provided. At this time, the performer can freely play a melody in accordance with the accompaniment using keys 1041 of a higher pitch than 83 on the keyboard section 104 in FIG.

Next, in auto chord progression mode, when you select a rhythm and start automatic accompaniment, the rhythm accompaniment starts and repeats as in normal mode, but at the same time it differs from the rhythm pattern. Bass accompaniment and chord accompaniment also start with the bass pattern and chord pattern. In this case, the bass pattern and chord pattern repeat a predetermined 16-step pattern corresponding to the selected rhythm, but the bass note and chord note specified at this time follow a predetermined chord progression corresponding to the selected rhythm. is automatically specified over multiple measures.

In this way, in the auto chord progression mode, for example, if you select a rock rhythm, in addition to the rhythm accompaniment of the rock rhythm pattern using multiple rhythm instrument sounds, you will also receive the bass accompaniment of the rock bass pattern and bass progression, and the rock chords. Automatic accompaniment can be performed by using pattern and chord progression chord accompaniment. Then, the performer can freely perform a melody or the like in accordance with the accompaniment using any key 1041 of the keyboard section 104 shown in FIG.

Next, in both the normal mode and the autochord progression mode, the performance tempo and melody tone can be changed during performance, and performance effects such as intro, fill-in, and ending can be added. In this case, two modes can be selected: normal operation mode and auto operation mode.

In the normal operation mode, the performer can perform tempo up 5W1058 or tempo down 5W105 in Figure 3.
9 allows the tempo to be changed arbitrarily, and the melody/tone when the performer performs the melody can be arbitrarily changed by the tone changeover switch 1060. Furthermore, each performance effect can be added using the intro 5W1053, fill-in 5W1056, and ending 5W1057 shown in FIG.

In the auto-operation mode, the tempo and melody/timbre are automatically changed/designated independently of the above-mentioned switch operations. Furthermore, performance effects are automatically added at arbitrary timings. This is a particularly characteristic feature of the present invention.

In addition to the above operations, in both the normal mode and the autochord progression mode, the performer can switch rhythms during performance using rhythm 5W1051 in FIG.

(I weight in normal mode) Next, detailed operations in normal mode during automatic accompaniment will be explained. FIGS. 5 to 10 are flowcharts of operations when the CPU 101 executes a program (not particularly shown), particularly those related to the normal mode.

First, the FCRIO II of FIG. 1 is shown in FIG. 13, and those related to the operation in the normal mode are listed below.

Rhythm number register RR (Fig. 13(a));
A 3-bit register pattern register PR (FIG. 13(b)) that indicates which rhythm is currently designated among the rhythms 5W1051 of #1 to #6 in FIG. 3; the current rhythm pattern or chord pattern is A 2-bit register indicating whether it is a main pattern, a fill-in pattern, an intro pattern, or an ending pattern Prism number register PRR (Figure 13 (C))
; 3-bit register accompaniment flag BF indicating the rhythm number immediately before the current rhythm is specified (see Fig. 13);
e)); 1-bit flag tempo data register TR (Fig. 13(f)) that indicates whether automatic accompaniment or autorhythm is currently being performed; 5-bit register that indicates the current tempo; The rhythm counter RC counts up based on the auto chord progress flag ACR (Figure 13 ((a));
1-bit flag pattern change standby flag PTF indicating whether or not the auto chord progression mode is set (Fig. 13 (h)
); Rhythm is switched or ending 5W1
057 (Fig. 3) is pressed and until the pattern is actually switched, a 1-bit flag auto operation flag AOF (Fig. 13 (0)) indicating whether or not the pattern is on standby is pressed.
); 1-bit flag that specifies whether to change the melody sound, change the tempo, and add intro, fill-in, and ending effects manually by the performer or independently and automatically; Figure 5 ~ The operation in the normal mode will be explained along the operation flowchart of FIG.

Special Selection First, when the performer turns on the power of the main body (not shown), the main operation flowchart of FIG. 5 starts, and initial processing is first performed at 3501.

Details of this process are shown in FIG. In other words, 56 in the same figure
In steps 01 to S6092, various flags are initialized. Note that the reason why the contents of the tempo data register TR are initialized to 16 is because the contents of the tempo data register TR are set to 16 as described later.
This is because the tempo can be set to a value in between. After these processes, the initial process ends (S6092→S61.0).

After the initial processing in FIG. 5 8501, 5502~
The processing loop of 5506 is repeated.

First, in 5502, tempo processing is performed. Details of this process are shown in FIG. That is, at step 5701, it is determined whether or not tempo amplifier 5W1058 in FIG.
If it is determined that W has been pressed, the value of the tempo data register TR is incremented by 1 in 5704, the tempo is increased, and the tempo processing is ended (S704--3703). 5701 (7
) If the determination is NO, it is determined in S702 whether or not the tempo down 5W1059 in FIG. The tempo is lowered and the tempo processing ends (S705→S703). Note that the value of the register is controlled so that it does not become less than O or more than 31, although not specifically shown. If the determination in step 5702 is No, the tempo processing ends without performing tempo control (S
702-3703).

After the tempo processing in FIG. 5 5502, initial rhythm switching processing is performed in S503. The details of this process will be shown in Part 8. That is, at 5801, the rhythm SWI O5 in FIG.
1 has been switched, and if YES,
Proceed to 5801 → 5802 and store the value corresponding to the rhythm number of rhythm 5W1051 in the rhythm number register RR.
is set to switch the rhythm, and the initial rhythm switching process ends (S803-5804). Here, as shown in FIG. 13(a), values from 0 to 5 are set in 3-bit binary numbers corresponding to rhythm numbers #1 to #6 (see also FIG. 3). On the other hand, if the rhythm SWI O51 has not been switched and the determination in 5801 is No, the initial rhythm switching process ends without doing anything (S801-380
4).

After the initial rhythm switching process of 3503 in FIG. 5 above, 550
31, it is determined whether or not auto operation mode 5W1061 in FIG. 3 has been pressed. Auto operation mode 5WI061
specifies whether to change the melody, change the tempo, and add intro, fill-in, and ending effects (described later) by the performer using the corresponding switches in Figure 3, or whether to do it automatically independently. The former is called normal operation mode and the latter is called auto operation mode, and the current mode is determined first.
This is indicated by the value of the auto-operation flag AOF described in FIG. 13 (0) in FCRIOII in the figure. In the initial state, in the initial processing of FIG. 5 3501,
The auto-operation flag AOF has been reset to 0 (36021 in Fig. 6), and the system is in normal operation mode. A detailed operation flowchart of the auto operation mode process 55031 in FIG. 5 is shown in FIG. 22, but if the auto operation 5W 1061 in FIG.
01 becomes No, the process exits to S2209, and the process at 35031 in FIG. 5 is ended. Regarding the processing in FIG. 22, see 1. This will be explained in detail after the auto chord progression process.

After the auto operation mode processing in 35031 in FIG. 5 above, the auto code progression 5W10 in FIG.
52 is pressed. Currently, in the normal mode, the SW is not pressed, so the determination is NO.

Subsequently, in step 5505, it is determined whether or not the intro 5W 1053 in FIG. 3 has been pressed. The case where the button is pressed will be described later.

If the determination at 5505 is No, it is determined at 5506 whether or not the star SW 1054 in FIG. 3 has been pressed.

If Start 5W1054 is not pressed, the above 550
The process repeats steps 2 to 5506 and waits until any one of autochord progression 5W1052, intro 5WIO53, or start 5W1054 in FIG. 3 is pressed.

Blade Trap JI2αυLU Shoulder 1 When the performer presses the start 5W1054 in FIG. 3 in the standby state shown in FIGS. 5502 to 5506, the playback operation of only rhythm sounds begins.

First, after the determination of 5506 becomes YES, 35081
Whether the value of the auto operation flag AOF is 1 or not,
That is, it is determined whether the mode is auto operation mode or normal operation mode.

Now, since the flag is initialized to 0 in the initial processing of 5501 (36021 in FIG. 6), the normal operation mode starts, and the determination of 35081 becomes No, and the process moves to 8509. Note that the process when the determination here is YES and the process proceeds to the auto operation mode 35082 will be explained in detail after the auto chord progression process is explained.

In S509, it is determined whether the content of the accompaniment flag BF is 1, that is, whether automatic accompaniment or autorhythm is being performed. Now, since the flag is initialized to 0 in the initial processing at 5501 (3608 in FIG. 6), the autorhythm is initially in progress and the determination at 5509 is NO.

Subsequently, if the performer does not press the accompaniment key 1042 shown in FIG. 2, the determination at 5519 becomes NO, and the rhythm reproduction process at 5514 is performed. The details of this process are shown in FIG.

First, in steps 3901, 5902, and 5903, it is determined whether the value of the pattern register PR is 1.2 or 3, that is, whether the pattern to be automatically accompanied is a fill-in pattern, an intro pattern, or an ending pattern. When the performer presses the start 5W1054, the register is initialized to 0 by the initial processing in 5501 (3605 in Figure 6), so the pattern starts with this, and all determinations in 5901 to 5903 are NO. The process then proceeds to step 8904.

In 5904, it is determined whether the value of the pattern change standby flag PTF is O. The function of this flag will be described later, but since the flag is initially set to O in the initial processing of 5501 (3607 in Figure 6),
The determination in step 904 is NO, and the process advances to step 5905.

At step 5905, the step indicated by the counter value of the RC (rhythm counter) 103 in FIG. 1 is read out of the 16-step main rhythm pattern corresponding to the rhythm number indicated by the rhythm number register RR. Now, CP
The pattern memory section 106 connected to Ul0I stores a rhythm pattern (the chord pattern and the bass pattern will be described later) having a structure as shown in FIG.

As shown in the figure, the rhythm pattern consists of four patterns: a main pattern, a fill-in pattern, an intro pattern, and an ending pattern, and each of these patterns has 16 steps of 0 to 15 for each rhythm of #1 to #6. tl is formed with the pattern of. FIG. 15(a) shows the rhythm pattern of each of the 16 steps in FIG. 14. As shown in the figure, during automatic accompaniment, whether or not to generate rhythm sounds for each step can be set to 0 or 1 for each of the eight rhythm instrument sounds.
It can be specified as a binary number. Here, BD is a bass drum sound, SN is a snare drum sound, CH is a closed by-butt sound, OH is an open-by-butt sound, T1 to T2 are tom 1 to tom 3 sounds, and CY is a cymbal sound. From these configurations, in 3905 in FIG. 9, the CPUl in FIG.
0I is the first pattern stored in the pattern memory section 106.
Among the main rhythm patterns shown in Figure 4, the rhythm numbers (#1 to #6) corresponding to the values indicated by the rhythm number register RR are
R in Figure 1 from the main rhythm pattern of
Read the step corresponding to the counter value of e2O3.

Following the above operation, at 5906 in FIG. 9, an instruction is given to the rhythm sound generator 111 in FIG. 1 to generate the rhythm sound for which rl is specified in the read step. At this time, as shown in FIG. 15(a), in order to generate about 8 types of rhythm sounds in parallel, the above operation is also necessary for 8 tones, but this is because the rhythm sound generation section 111 of FIG. By time-division operation, each rhythm sound can be performed independently.

As a result, the rhythm sound generation section 111 generates rhythm sounds for each rhythm sound at timings based on the rhythm pattern, and the sounds are emitted via the sound system 112.

When the process in 5906 is completed, the process proceeds to 3907, and 1
The rhythm sound playback process for the steps ends.

When the rhythm reproduction process for one step is completed at 8514 in FIG. 5, the routine waits for input of a timer clock from the timer clock generator 102 in FIG. 1 by repeating 5515.

When the timer clock is input, R in FIG.
e2O3 is counted up.

After processing 5517.351B (described later), 55081.5509.5519 (7) Each determination is N.

Then, the rhythm reproduction process of 5514 is performed again.

In this case, in 3905 in FIG. 9, RCI03 in FIG.
Since the value of is incremented by +1, the rhythm numbers (#1 to #6) corresponding to the value indicated by the rhythm number register RR among the main rhythm patterns of FIG. The step in which the main rhythm pattern (any one of these) is read out is one step ahead of the previous processing.

3 in FIG. 9 according to this read step.
At 906, rhythm sound generation processing is performed.

As mentioned above, S 5081 → 5509 → 35 in Figure 5
19→5514→5515-5518→55081→5
By repeating the loop processing of 509, the rhythm number register RR of the main rhythm pattern in FIG.
The 16-step main rhythm pattern of the rhythm number (any one of #1 to #6) corresponding to the value indicated by is sequentially read out, and rhythm sounds are generated in accordance with the rhythm pattern. In this case, RCIO3 in FIG. 1 is a hexadecimal counter, and after counting up to step 15, it returns to step O.
, each rhythm tone is repeatedly sounded for a predetermined 16 steps. These 16 steps correspond to, for example, one bar on the musical score. That is, each of the approximately eight types of rhythm tones during automatic accompaniment is played repeatedly in a fixed rhythm pattern for each bar.

In the rhythm sound only playback operation, the rhythm sound production speed is the speed at which Re2O3 in FIG. 1 is counted up at 8516 in FIG. 5, that is, the timer clock is input from the timer clock generator 102 in FIG. It is determined by the speed.

The input timing of this timer clock is CPtJlol in FIG. 1, which is 0 in the tempo data register TR.
31 levels are determined depending on the value of ~31. The tempo data register TRO value is initially set to an intermediate value of 16 in the initial processing at 5501 in FIG.
02), and can also be changed at 8502 in FIG. 5 before automatic accompaniment.

In addition to this processing, the performer also performs tempo up 5W1058 or tempo down 5W10 in FIG.
By operating 59, the tempo data register TRO value can be changed at 5517 in FIG. This process is
This is exactly the same as the tempo processing in step 502, and is shown in FIG. 7, which has already been described.

Through the above processing, the performer can change the tempo of the rhythm sound being produced even during automatic accompaniment.

In the above operation of reproducing only rhythm sounds, the value 0 to 5 indicated by the rhythm number register RR determines which rhythm number of the main rhythm pattern #l to #, 6 is selected among the main rhythm patterns shown in FIG. #1~ corresponding to
The rhythm number #6 is selected.

The value of this rhythm number register RR is changed at 8503 in FIG. 5 before the automatic accompaniment starts, but even when the performer is playing rhythm numbers #1 to #6 in FIG.
By selecting a desired one among W1051, the rhythm pattern can be changed arbitrarily. This operation is realized as a part of the various switching processes 8518 in FIG.
The details of the process are shown in FIG.

First, all determinations in S1001-31003 are No (this will be described later), and the process proceeds to S51004. Here, if the rhythm 5W1051 in FIG.
The various switching processes at 3518 in FIG. 5 are then completed.

On the other hand, when the same SW is switched, S 100
4 is YES, S 1005 and S 100
Proceed to step 6.

In S1005, the previous rhythm number register RR
Copy the O value to the prism number register PRR. In the next step 31006, a value corresponding to the rhythm number of rhythm 5W1051 is set in the rhythm number register RR to switch the rhythm.

Next, in step 31007, it is determined whether the counter value of Re2O3 (indicating the next step to be sounded) in FIG. It will be judged.

If the determination in S1007 is YES, that is, the timing is just right, the process advances to 31008, where it is determined whether the value of the autochord progress flag ACH is 1 or not. Currently in normal mode, the contents of ACR are 3 in Figure 5.
Since it is still initialized to 0 in the initial processing of 503 (3603 in Figure 6), this judgment is NO and 3101
Proceed to step 2. In S1012, the pattern change standby flag PTFO value is set to 0, and then in S101
3, the various switching processes shown in FIG. 5 3518 are completed.

That is, the PTFO value becomes 0 at exactly the right timing of the 16 step rhythm pattern.

- If the judgment of force, S 1007 is NOl, that is, the timing is in the middle of the main rhythm pattern of 16 steps, S
After the process proceeds to step 1014 and the value of the pattern change standby flag PTF is set to 1, the value of the pattern change standby flag PTF is set to 1.
The various switching processes in step 8 are completed. That is, at the timing in the middle of the 16-step main rhythm pattern, the PTFO
The value becomes 1.

After changing the value of the rhythm number register RR and setting the pattern change standby flag PTFO value as described above, 55081.5509.3519 in FIG.
The determination becomes No, and the rhythm reproduction process of 5514 is started again.

Here, if the rhythm changes at just the right timing of the main rhythm pattern of 16 steps, the pattern change standby flag PTFO value is 0, so after going through steps 5901 to 5903 in FIG. 9, the judgment in 5904 is The answer will be YES. Therefore, in the next step 3905, the rhythm number corresponding to the new value indicated by the rhythm number register RR due to the rhythm switching among the main rhythm patterns of FIG. 14 stored in the pattern memory section 106 of FIG. The main rhythm pattern is sequentially read out from step O, and thereafter, rhythm sounds are produced using the changed rhythm pattern.

On the other hand, if the rhythm changes in the middle of the 16-step main rhythm pattern, the pattern change standby flag PTFO value is 1, so 5901 to 5901 in FIG.
After passing through 5903, the judgment of 5904 becomes NO and 590
Proceed to step 8.

At 390B, among the main rhythm patterns shown in FIG. 14 stored in the pattern memory section 106 shown in FIG.
Read the step corresponding to the counter value. here,
Since the value corresponding to the rhythm number before the rhythm is switched is stored in the prerhythm number register PRR, the process does not proceed to 3906 until the value of Re2O3 in FIG. 1 is determined to be 15 in the next step 3909. The rhythm sound is produced using the original rhythm pattern before the rhythm is switched.

Then, the above-mentioned rhythm playback process of 5514 is repeated through the loop of 35081 to 5518 of FIG. 5, and when the value of Re2O3 of FIG. 1 becomes 15 at 8909 of FIG. When reaches the final 15 steps, the judgment becomes YES, and after the next judgment in 5910 becomes NO (because it is normal mode, the value of ACH is O), the pattern change standby flag PTFO value becomes 0 in 5913. returned to 8906
The final step of the main rhythm pattern before the rhythm changes is sounded. After this operation, 350 in FIG.
When the loop of 81 to 351B is repeated and the rhythm playback process of 5514 is started again, PTF is set to O, so 3 in FIG.
When the determination in 904 is YES, in 5905 a new value indicated by the rhythm number register RR is added due to the rhythm being switched among the main rhythm patterns of FIG. 14 stored in the pattern memory section 106 of FIG. The main rhythm pattern of the rhythm number corresponding to is read out sequentially from step 0, and from then on, rhythm sounds are produced using the changed rhythm pattern.

In this way, when the rhythm is switched at a timing in the middle of the 16-step main rhythm pattern, the main rhythm pattern before the rhythm switch is sounded until a good timing is reached, and then the new main rhythm pattern is switched.

While the rhythm playback process of 5514 is being repeated in the loop of 35081 to 5518, the performer
The operation when pressing the fill-in 5W1056 shown in the figure will be explained. In this case, the rhythm sound is generated using the fill-in rhythm pattern from that timing until the 15th step, and then the main rhythm pattern is returned to.

The switching preparation process for this purpose is performed in various switching processes 8518 in FIG. That is, in FIG. 10, S1001 is YES, so S1001 is YES.
The process moves to step 015, where the value 1 is set in the pattern register PR, and in step S1013, the various switching processes shown in FIG. 55518 are ended.

After the pattern register PRO value is changed as described above, the determination at 55081.5509.5519 in FIG. 5 becomes NO, and the rhythm reproduction process at 5514 is started again.

In FIG. 9, since the PR=1, the determination in 5901 becomes YES, and the process proceeds to 8914. 5914, the first pattern stored in the pattern memory section 106 in FIG.
Among the fill-in rhythm patterns in FIG. 4, the step corresponding to the counter value of Re2O3 in FIG. 1 is read out from the fill-in rhythm pattern of the rhythm number corresponding to the value indicated by the rhythm number register RR.

Thereafter, until the next step 5915 determines that the value of Re2O3 is 15, the process proceeds to 3906 and rhythm sounds are generated in the fill-in rhythm pattern.

As shown above, even if the rhythm is switched in the middle of the 16-step main rhythm pattern, it is immediately changed to the fill-in rhythm pattern. Thereby, a fill-in effect can be added to the rhythm sound being generated at the timing when the performer presses the fill-in 5W1056 in FIG. 3.

Based on the above operations, 35081 to 3518 in FIG.
When the rhythm playback process of 5514 is repeated through the loop, and the value of RCI03 of FIG. 1 becomes 15 at 3915 of FIG. 9, that is, when the next rhythm pattern to be generated becomes the final 15 steps. The determination in 8915 is YES, and the process advances to 5916.

In S916, the contents of the pattern register PR are returned to O, and preparations are made to return to the main rhythm pattern. Subsequently, processes 5916 to 5919 are performed, but these processes are performed in an autochord progression mode, which will be described later.

After these processes, the process advances to 5906 and the rhythm sound of the final step of the fill-in rhythm pattern is generated.

After the above operation, when the loop of S 5081-S 518 in FIG. 5 is passed and the rhythm playback process is entered again in 5514, since PR has been set to 0, the determinations in 5901 to 5903 in FIG. 9 become No. Return to sound production using this rhythm pattern.

The ending SW is only for rhythm.
While the rhythm playback process of 5514 is being repeated in the loop of 55081 to 5518, the performer
The operation when pressing Ending 5W1057 in the figure will be explained. In this case, after the rhythm tones are generated up to a point with good separation using the main rhythm pattern, the rhythm tones are generated using the 16-step ending rhythm pattern, and the automatic accompaniment using the rhythm tones is ended.

The switching preparation process for this purpose is performed in various switching processes 8518 in FIG. That is, in FIG. 10, since the determination in S 1002 is YES, S 1
The process moves to step 016, where the value 3 is set in the pattern register PR, and the process proceeds to step S1007.

In S1007, the Re2O3 counter value in Figure 1 is 0.
In other words, it is determined whether or not the actual timing of the 16-step rhythm pattern is just right.

If the determination in S 1007 is YES, that is, the timing is just right, the determination in S 31008 is N.

The process then proceeds to S1012, and after the value of the pattern change standby flag PTF is set to 0, the various switching processes shown in FIG. 55518 are ended in S1013. That is,
As in the case of rhythm switching during the rhythm sound playback operation, 1
At exactly the right timing of the 6-step main rhythm pattern, the value of PTF becomes 0.

On the other hand, if the determination in S1007 is NOl, that is, the timing is in the middle of the 16-step main rhythm pattern,
Proceed to 1014 and set the pattern change standby flag PTFO
After the value is set to 0, S 1013 to FIG.
18 various switching processes are completed. In other words, at the timing in the middle of the 16-step main rhythm pattern, the PTF
The O value becomes 1. This is also the same as the case of rhythm switching.

After changing the value of the pattern register PR and setting the value of the pattern change standby flag PTF as described above, the determination of 35081.5519 in FIG. 5 becomes No, and the rhythm playback process of 5514 is started again. enter.

Then, the determination of 5903 in FIG. 9 becomes YES, and 5
The program then proceeds to 920 to begin processing the ending rhythm pattern.

Here, at the perfect timing of the 16-step main rhythm pattern, the ending 5W10 in Figure 3 is played.
When 57 is pressed, pattern change standby flag PT
Since the value of F is 0, the determination in 5920 is YES. Therefore, in the next step 5921, among the ending rhythm patterns of FIG. 14 stored in the pattern memory section 106 of FIG. are read out sequentially, and then the next 59
39 until the Re2O3 value is determined to be 15 at 22.
Proceeding to step 06, rhythm sounds are produced using the ending rhythm pattern.

Then, the above rhythm playback process of 5514 is repeated through the loop of 350B1 to 5518 in FIG.
When the value of 3 becomes 15, that is, when the next rhythm pattern to be sounded is the final 15 steps, 89
The determination at step 22 is YES, and at step 5923 the final step of the ending rhythm pattern is sounded.

After this operation, the process jumps from 5923 to the process of S1017 via the path shown in FIG. And the judgment of S1017 is NO
(In the normal mode, the value of ACR is O.) Therefore, the process jumps from 51017 to the process 5603 and subsequent steps via the route shown in 3501 in FIG. After this process, after the initial process of 8501 in FIG. 5 is performed (processing after 3603 in FIG. 6),
The process of 5502 to 5506 is repeated and the program waits until any of the auto chord progression 5W1052, intro 5W1053, or start 5WIO54 in FIG. 3 is pressed. Note that the initial settings of the rhythm number register RR, tempo data register TR, and normal operation mode of 5601 and 5602 in FIG. Automatic accompaniment begins at the tempo and tempo, and automatic performance is performed in normal operation mode.

On the other hand, if ending 5W1057 in FIG. 3 is pressed in the middle of the 16-step main rhythm pattern, the value of the pattern change standby flag PTF is l, so the determination in 5920 in FIG. 9 becomes NO and goes to 5924. move on.

5924, the main rhythm pattern of Re2O3 of FIG. 1 is selected from the main rhythm pattern of the rhythm number corresponding to the value indicated by the rhythm number register RR, which is one of the main rhythm patterns of FIG. Read the step corresponding to the counter value. That is, until the value of Re2O3 in FIG. 1 is determined to be 15 in the next step 8909, the process proceeds to 3906 and rhythm sounds are generated according to the main rhythm pattern.

Then, the above-mentioned rhythm playback process of 5514 is repeated through the loop of 35081 to 5518 of FIG. 5, and when the value of Re2O3 of FIG. 1 becomes 15 at 3909 of FIG. When reaches the final 15 steps, the judgment becomes YES, and after the next judgment at 3910 becomes NO (because it is normal mode, the ACR value is 0), the value of the pattern change standby flag PTF is changed at 5913. Returned to O, 8906
Then, the final step of the main rhythm pattern is sounded.

After this operation, when the loop from 55081 to 5518 in FIG.
Since F was set to 0, the decision at 8920 in Figure 9 becomes YES, and the subsequent 16 steps are 5920→59.
Through the processing of 21→5922→5906, rhythm sounds are produced in the ending rhythm pattern.

Then, when the rhythm sound generation process is repeated and the value of Re2O3 reaches 15, the determination in 5922 becomes NO, and after the final step of the ending rhythm pattern is generated in 5923, the automatic Ends the accompaniment movement.

As shown above, when the automatic accompaniment ends, the performer
By pressing Ending 5W1057 in the figure, it is possible to easily add an ending effect to the rhythm pattern.

The operation when the player presses the intro 5W 1053 in FIG. 3 to start the rhythm reproduction process 5514 through the loop 55081 to 5518 will be described. In this case, first, rhythm tones for 16 steps are generated using the intro rhythm pattern, and then the rhythm tones are generated using the main rhythm pattern.

First, in the standby state due to the processing loop of 5502 to 5506 in FIG.
When you press 53, the judgment in S 505 becomes YES, and 5
The process advances to step 507, where the value 2 is set in the pattern register PR, and the intro rhythm pattern mode is entered. After that,
Similar to when the start 5W 1054 (FIG. 3) is pressed, the determinations of 35081.5509 and 5519 become NO, and the rhythm reproduction process of 5514 begins.

In this case, the determination at 3902 in FIG. 9 is YES and 59
Proceed to step 26. 5926, the pattern memory section 1 in FIG.
Among the intro rhythm patterns shown in FIG. 14 stored in step 06, the intro rhythm patterns of rhythm numbers corresponding to the values indicated by the rhythm number register RR are sequentially read out from step 0.

After that, in the next 5927, the value of Re2O3 in Figure 1 is 15
Until it is determined that this is the case, the process proceeds to 5906 and rhythm sounds are generated using the intro rhythm pattern.

Based on the above operations, 35081-3518 in FIG.
The rhythm playback process of 5514 is repeated through the loop, and when the value of RCI03 of FIG. 1 becomes 15 at 8927 of FIG. 9, that is, when the rhythm pattern to be generated next becomes the final 15 steps The determination in 3927 is YES, and the process proceeds to 8928.

At 5928, the contents of the pattern register PR are changed to O, and preparations for transition to the main rhythm pattern are made. After this processing, the process advances to 5906 and the final step of the intro rhythm pattern is sounded.

After the above operation, when the loop from 85081 to 3518 in FIG.
is set to O, the determinations at 5901-3903 in FIG. 9 become NO, and the process shifts to the sound generation operation based on the main rhythm pattern.

As described above, the performer can easily add the intro effect to the rhythm pattern by pressing the intro 5W1053 in FIG. 3 when starting automatic accompaniment.

While the rhythm playback process of 5514 is being repeated by the loop of 55081 to 5518, the performer
The operation when the stop 5W1055 in the figure is pressed will be explained.

In this case, in the various switching processes 5518 in FIG.
The determination of 31003 in FIG. 10 is YES, and S 10
Proceed to step 17. Then, since the determination in S1017 is No (the value of ACR is O in normal mode), 3
From 1017, the process jumps to steps 5603 and subsequent steps via the path 5501 in FIG. The subsequent processing is the same as the processing when the automatic accompaniment ends when the performer presses the ending 5W1057 in FIG.

While the rhythm playback process of 5514 is being repeated through the loop of 35081 to 5518, the performer plays the notes between C2 to B and No. of FIG. 2 on the keyboard section 104 of FIG. The operation when one of the accompaniment keys 1042 is pressed will be explained.

In this case, the key information Kl shown in FIG. 4 corresponding to the pressed accompaniment key is sent from the keyboard section 104 to the CPU 101 shown in FIG.
enters.

This input state is detected at 3519 in FIG. 5 while the rhythm sound is being generated, and the determination is YES.

As a result, first, at 5520, the accompaniment flag BF is set to 1, and the mode shifts to accompaniment mode.

Subsequently, in 5521, code judgment is performed.

This is because the key information Kl is passed from the CPUI 01 in FIG. This process determines the root note and chord of a key.

Next, in 5512, bass sound reproduction processing is performed. This process is a process for accompaniment with a bass note at the pitch of the root note determined by the chord judge unit 108 in FIG. . Therefore, the details are also similar to the details of the rhythm reproduction process shown in FIG.

In this case, the pattern memory section 106 in FIG.
A base pattern having the same structure as the rhythm pattern shown in FIG. 4 is stored.

That is, the base pattern consists of four patterns: a main pattern, a fill-in pattern, an intro pattern, and an ending pattern, and each pattern is composed of 16 step patterns for each rhythm of #1 to #6 for each pattern. FIG. 15(C) shows the base pattern of each of the 16 steps in FIG. 14. As shown in the figure, it is possible to specify with a binary number of 0 or 1 whether or not one type of bass tone is to be generated for each step during automatic accompaniment.

In conjunction with the above configuration, the base playback process 5512 in FIG. In synchronization with the playback process, the playback process of the bass sound based on the main bass pattern, fill-in bass pattern, ending bass pattern, and intro bass pattern is performed. That is, the operation when playing the bass sound for fill-in 5W1056, ending 5W1057, intro SWI 053, etc. in Fig. 3 is as follows.
This is exactly the same as when playing rhythm sounds.

Note that the bass note (which is a single note) is generated by the accompaniment tone generating section 110 shown in FIG.
is configured to be able to generate multiple musical tones in parallel through time-sharing processing.

Next, at 3513, chord tone reproduction processing is performed. This process is a process of performing chord accompaniment using the chord determined by the chord judge section 108 in FIG. 1, and performs the same process as the rhythm reproduction process in step 5514 above, except for the chord specification. Therefore, as in the case of bass sound reproduction, the details will be explained in the 9th section.
This corresponds to the details of the rhythm playback process shown in the figure.

In this case, the pattern memory section 106 in FIG.
A chord pattern having the same structure as the rhythm pattern shown in FIG. 4 is stored.

FIG. 15 Φ shows the code pattern for each of the 16 steps in FIG. 14. As shown in the figure, during automatic accompaniment, it is possible to specify with a binary number of 0 or 1 whether or not one type of chord note (3 to 4 notes are sounded as a chord at the same time) is sounded for each step. It is.

In addition to the above configuration, since the chord playback process 5513 in FIG. In sync with this code pattern,
A chord tone reproduction process is performed based on the fill-in chord pattern, the ending chord pattern, and the intro chord pattern. That is, fill-in 5W1 in FIG.
056, Ending 5W1057, Intro 5W10
53 etc., the operation when playing chord sounds is exactly the same as when playing rhythm sounds.

Note that the reproduction of the chord sound is performed by the accompaniment sound generation section 110 shown in FIG. 1, as described above. In this case, since the chord tones usually consist of 3 to 4 tones, these multiple tones are produced in parallel by time-sharing processing.

In the above bass tone and chord tone reproduction processing, the fifth
At 3519 in the figure, once the accompaniment l! 1042 (Figure 2)
After the key information Kl is input from , the accompaniment flag BF is set to 1 at 5520, so from the next step, after the determination at 35081 becomes No, the determination at 5509 becomes YES. Further, the determination at 5510 is NO (the ACR value is 0 because it is in normal mode), and a direct code judgment is performed at 3521. Therefore, in the reproduction of the bass note and chord note at each step by repeating the loop of 35081 to 3518, if there is no new key information Kl, the same root note pitch and chord will be repeated, and the player will be If the accompaniment key 1042 in FIG. 2 is pressed anew, the pitch and chord of the root note will be changed accordingly.

As described above, when the performer presses the accompaniment key 1042 shown in FIG. By pressing the accompaniment keys 1042 one after another, automatic accompaniment can be performed while changing the pitch of the bass note and the chord type of the chord note at that timing.

(Autochord mode) Next, detailed operations in the autochord progression mode during automatic accompaniment will be explained. In addition to the operation flowcharts shown in FIGS. 5 to 10, FIGS. 11 and 12 are operation flowcharts related to the autochord progression mode.

First of all, the FCR of Figure 1 shown in Figure 13 above
In addition to what was explained in the normal mode, things related to the operation in the auto chord progression mode are listed below.

Progression register SR (Fig. 13(d)); 2-bit register tone length counter OC indicating whether the current chord progression data is a main chord progression, a fill-in chord progression, an intro chord progression, or an ending chord progression; A counter that counts by subtracting the note length of the progression.Chord counter CC; A counter that counts up the address of the chord progression data.Chord name register OC.
R, register for storing chord name data CD Scale code register 0TCR; register for storing scale data OTD Below, the operation of the auto chord progression mode will be explained in accordance with the operation flowcharts of FIGS. 5 to 12.

O Code 1'-Mo 1 Process First, when the player turns on the power of the main unit (not shown), in the standby state described in the normal mode, that is, in the repeated operations 5502 to 5506 in FIG. Auto chord progression 5W1052 in Figure 3
When you press , the judgment of 5504 becomes YES and 8
The process advances to step 508 of autochord progression mode processing. This process is a standby process before starting the autochord progression operation, and its details are shown in FIG. 11.

First, in 5IIOI, a value l indicating the autochord progression mode is set in the autochord progression flag ACR.

In the next 31102, auto chord progression 5W1 in Figure 3
The LED above 052 is lit to notify the performer that the auto chord progression mode has been entered.

Subsequently, in step 51103, the accompaniment flag BF is set to a value 1 indicating that accompaniment is in progress. This is because in the autochord progression mode, an accompaniment operation using bass notes and chord notes is always performed.

Furthermore, in 31104, the current rhythm number register RR
The tempo data TD corresponding to the rhythm number specified by is placed in the tempo data register TR. Now, the chord progression memory section 107 in FIG.
Tempo data TD is stored as a rhythm header corresponding to each of rhythm numbers #1 to #6 as shown in FIG.

Details of the tempo data TD are shown in FIG. 1'1. As shown in the figure, the tempo data TD is 5-bit binary data, and can specify a tempo from 0 to 31.

Then, tempo data TD corresponding to each rhythm number is
By having the rhythm 5W10 of FIG.
51, the tempo data TD corresponding to the selected rhythm number is stored in the chord progression memory section 1 of FIG.
07 rhythm header - and set in the tempo data register TR. This is because, for example, rock has a fast tempo and waltz has a relatively slow tempo, so when the rhythm is switched, the optimum tempo is automatically set.

After processing steps 31101 to 51104 above, S11.05
-5l109 is repeated to enter the input waiting state of each switch. In other words, in auto chord progression mode, 5
By each determination process of 1106.51107 and 5110B, the performer can perform the start 5W1054 and rhythm 5 of FIG.
By pressing either W1051 or intro SWI 053, auto chord progression mode is started. Each of these will be described later.

Here, 31105 is a process that allows the performer to arbitrarily change the tempo when performing automatic accompaniment from now on using tempo up 5W1058 or tempo down 5W1059 in FIG. 3 while waiting in the auto chord progression mode. , is the same as the tempo processing at 8502 in FIG. 5 during normal mode standby (see FIG. 7).

Further, 511091 is in auto operation mode 5W10 in FIG. 3, as in the case of 35031 in FIG.
A detailed operation flowchart is shown in FIG. 22 in the process of determining whether or not 61 is pressed.
The determination in FIG. 32201 is NO, and the process skips to S2209 and ends the process in FIG. 5 311091. The processing in this case will also be explained in detail after the explanation of the autochord progression processing.

Furthermore, 31109 indicates that the performer performs autochord progression 5W1052 in FIG. 3 while waiting in the autochord progression mode.
If is pressed again, the process exits the auto chord progression mode and returns to the initial state again. That is,
When auto code progression 5WI052 is pressed, 3110
The determination in step 9 is YES, and as a result, the value of the auto chord progression flag ACH is returned to 0 at 31115 to return to normal mode, and furthermore, the LED above auto chord progression 5W1052 in FIG. 3 is turned off at 31116. Ru. After these operations, the process jumps from 51116 to the process 5603 and subsequent steps via the path 2 in FIG. 6 in 8501 in FIG. 5, and the automatic accompaniment ends. The subsequent processing is performed when the performer performs the ending 5W1057 in Figure 3 in normal mode.
This is the same process as when the automatic accompaniment ends when is pressed.

While waiting for the autochord progression mode shown in Fig. 11 31105 to 31109 of Autochord '-9, the performer selects the start 5W105 shown in Fig. 3.
When either 4 or Rhythm 5W1051 is pressed, auto chord progression processing begins. In addition, intro 5W105
The case where 3 is pressed will be described later.

First, if Start 5W1054 is pressed, 511
07 becomes YES, and in S1110, Fig. 5 35
08 auto chord progression mode processing is finished, 5508
Go to 1. Also, if any of rhythm 5W1051 is pressed, the determination of 3110B becomes YES and S1
Proceed to 111, 5llll is the pressed rhythm 5W1
A value corresponding to the rhythm number 051 is set in the rhythm number register RR to switch the rhythm. Also, in the next step 31112, similarly to the operation in step 31104, the tempo data TD corresponding to the rhythm number set in the rhythm number register RR is transferred to the tempo data register TR.
Set to . After these processes, the auto chord progression mode process of 5508 in FIG. 5 is finished at 5ttio, and
The process proceeds to step 081. As above, start SW
When IO54 or rhythm 5W1051 is pressed, the process advances to step 55081.

At step 35081, it is determined whether the value of the auto-operation flag AOF is 1, that is, whether the mode is auto operation mode or normal operation mode. Now 55
Since the flag is initially set to O in the initial processing of 01 (36021 in FIG. 6), the normal operation mode is initially set, and the determination of 55081 is No. The process when the determination here is YES and the process proceeds to the auto operation mode 35082 will be explained in detail after the auto chord progression process is explained.

Subsequently, the determination at 5509 is YES because the accompaniment flag BF is set to 1 at 31103 in FIG.
Also, the determination of 5510 is YES because the autocode progress flag ACR is set to 1 at 5l101 in FIG.
It becomes S. This causes the process to proceed to the autochord progression process 5511 in FIG. After entering this process, every time the RC (rhythm counter) 103 is counted up by the timer clock from the timer clock generator 102 in FIG. 1, the processes 55081 to 5518 in FIG. 5 are repeated. Therefore, in the normal operation mode of autochord progression processing, 55081→5509-
35], 0-3511~S 51.8-S 5081
The loop processing is repeated. This process will be explained below.

First, in the loop of S 5081 to 5518, 55
The rhythm reproduction process No. 14 is exactly the same as the rhythm reproduction process in the normal mode, and the rhythm sound is repeatedly generated in a 16-step rhythm pattern.

Furthermore, in the bass playback process 5512 and the chord playback process 5513, the player can perform the second
The operation is similar to the operation when the accompaniment key 11042 is pressed, and the accompaniment with the bass tone and chord tone is repeated with independent bass patterns and chord patterns each having 16 steps. That is, for example, the production of rhythm tones of the same rhythm pattern, bass tones of the same bass pattern, and chord tones of the same chord pattern are repeated for each measure. Note that the rhythm pattern, bass pattern, and chord pattern are each independent patterns.

In the above operation, the pitch during the bass playback process and the chord type during the chord playback process were specified by the performer sequentially using the accompaniment keys 1042 in FIG. 2 in the normal mode; mode, these specifications are automatically made over multiple measures,
A major feature of this is that the burden on the performer is significantly reduced.

In order to realize the above operation, chord progression data having a configuration as shown in FIG. 16 is stored in the chord progression memory unit 107 connected to the CPU 101 in FIG. 1. As shown in the figure, the chord progression data includes the main chord progression,
Consists of four types of chord progressions: fill-in chord progression 1, intro chord progression, and ending chord progression, and each chord progression consists of 32 steps of chord progression data from 0 to 31 for each rhythm of #1 to #6. be done.

FIG. 18 shows chord progression data for each of the 32 steps in FIG. 16. The scale data OTD specifies scale names such as A and F# using 4-bit binary data. The chord name data CD is a minor (
m) - Specify major (M), seventh (7t, h), etc. Therefore, the chord type for each step is determined by the scale data OTD and the chord name data CD. The tone length data oD is 4-bit binary data,
Specify how long each chord is to be sounded, and the minimum unit is one step of a rhythm pattern, etc.
Corresponds to diacritics, eighth notes, etc.

The tone length data OD for each step is subtracted during sound generation, as will be described later, and when it becomes 0, the process moves to the next step. Note that the tone length data OD for appropriate steps up to the 31st step includes '111, which indicates the end, as shown in FIG. 18 (the 31st step is shown in the figure).
It contains data of 1"(1F" in hexadecimal representation),
A code type with an arbitrary step length can be specified by using the following steps excluding this step.

In this case, the concept of the steps in FIG. 16 or 18 is different from the steps of the rhythm pattern, bass pattern, chord pattern, etc. in FIG. 14 or 15. In other words, one stave of chord progression data is
As described above, this is a plurality of steps such as a rhythm pattern defined by the note length data OD. Hereinafter, in order to distinguish them, steps such as rhythm patterns will be referred to as pattern steps, and steps of chord progression data will be referred to as chord steps. Therefore, while the bass pattern and chord pattern repeat 16 pattern steps for each bar, the chord progression data that defines the bass pitch and chord type at that time is, for example, a chord of the 0th chord step, 01 note length, 8 , the chord of the first chord step is Am.

The note length is 8, the chord of the second chord step is F, the note length is 8.
, set the chord of the third chord step to C7, set the note length to 4, and set the chord of the third chord step to C7.
If the chord step chord is C5 note length is 4,..., then the 8 pattern steps at the beginning of the first measure are C chord,
The next 8 pattern steps are the Am chord, the first 8 pattern steps of the second measure are the F chord, the next 4 pattern steps are the C7 chord, the last 4 pattern steps are the C chord, and so on. While being done,
Automatic accompaniment progresses in auto chord progression mode.

Note that the bass pitch is specified, for example, by the root note (first note) of each chord.

S51 in Figure 5 for realizing the operation specified by the above code]
The details are shown in FIG.

First, the determination in S1201 is initially YES because the tone length counter OC is initially set to O in the initial processing of FIG. 55501 (FIG. 6 3609).

Next, in S1202, S1203, and S1204, it is determined whether the value of the progression register SR is 1.2 or 3, that is, whether the chord progression to be automatically accompanied is a fill-in chord progression, an intro chord progression, or an ending chord progression. It is determined whether or not. The performer starts at the start 5 in Figure 3.
When W1054 or Rhythm 5W1051 is pressed,
Since the register is initialized to O in the initial processing at 5501 in FIG. 5 (3606 in FIG. 61), this code progresses at the beginning, and all judgments at steps 51202 to S1204 are NO, and the process proceeds to step 31205. .

In S1205, among the main chord progression data of FIG. 16 stored in the chord progression memory section 107 of FIG.
From this chord progression data corresponding to the rhythm number indicated by the rhythm number register RR, the chord counter CC
The code step indicated by the counter value of is read out. Now, since the value of the code counter CC is initialized to 0 in the initial processing at 8501 in FIG.
3609 in FIG. 6), the chord progression data of the 0th chord step is initially read out.

Next, until the final step, the determination in S1206 is NO and the process advances to S1209. Here, first, the tone length data OD (see Fig. 18) of the Oth chord step is set in the tone length counter OC, and then in 31210, the tone length data OTD of the 0th chord step is set in the scale code register 0TCR. At the subsequent step 31211, code name data CD is set in the code name register CCR. This completes the designation of the code type corresponding to the Oth code step.

After the above processing, in S L212, the code counter CC
The O counter value is +1, and in S1213, the counter value of the note length counter OC is -1, and in the next step 31213, the fifth
The autochord progression process in FIG. 5511 ends.

After the above processing, bass reproduction processing is performed in 5512, but the scale at this time is the scale data OT of the 0th chord step set in the scale code register 0TCR.
The scale corresponding to D is specified.

Furthermore, chord reproduction processing is performed in step 5513, but the chord type at this time is the scale data OTD of the 0th chord step set in the scale code register 0TCH and the chord name data CD set in the chord name register CCR. specified based on.

In addition to the above bass playback process and chord playback process, the rhythm playback process is performed at 5514 in FIG.
Automatic accompaniment for pattern steps is completed.

Thereafter, the timer clock is input from the timer clock generator 102 in FIG. 1 by repeating 5515, and 551
6, RCLO3 in FIG. 1 is counted up. Then, after going through the processing of 5517.5518 (described above),
Each determination of 35081, 3509, and 3510 becomes YES, and the autocode progression process of 5511 is started again. In this case, in 31201 of FIG. 12, the tone length data OD of the 0th chord step was set in the tone length counter OC last time, so the determination in 5L201 is NO until the value becomes 0.

In this case 1, only the process of decrementing the counter value of the tone length counter OC by 1 is performed in S1213, and the autochord progression process of FIG. 5 8511 is ended in S1214. Therefore,
In the bass playback process 8512 and the chord playback process 5513 in FIG. 5, the same scale and chord type as the previous pattern stem knob are specified.

In the above state, the tone length counter OCO value is subtracted and O
This continues until the pattern step knob for the note length data OD of the Oth chord step is repeated.

Then, when the value of the tone length counter OC is determined to be O at 31201 in FIG. A process of reading out the chord step indicated by the chord counter CCO counter value out of this chord progression data is performed.

Now, since the chord counter CC is incremented by 1 in S1212 at the beginning of the reading of the first step, it is pointing to the value 1, and therefore, the chord progression data of the first chord step is read out here. Then, similarly to the 0th chord step, in steps S1209 to S1211, the contents of the tone length counter OC1 scale code register OTCR and chord name register CCR are set to correspond to the chord progression data of the first chord step, S1212
The value of the code counter CC is increased by 1, and S 12i3
The value of the tone length counter OC is decremented by 1 at step 51214, and the autochord progression process at step 3511 in FIG. 5 is ended.

As a result of the above processing, in the bass playback process 3512 and chord playback process 5513 in FIG. 5, the scale and chord type are specified based on the scale data OTD and chord name data CD of the first chord step, and this state is This continues until the pattern steps corresponding to the step's tone length data OD are repeated.

The above operation is repeated while sequentially reading each chord step of the present chord progression data, and when the final chord step of the present chord progression data is read out at 31205 in FIG. 12, the tone length data OD is as described above. 16
Since it is 1F# in decimal notation, the determination in S1206 is YES. As a result, the chord counter CC is set to 0 at the next step 31207, and the chord progression data of the 0th chord step is read again at 3120B.
31209 and subsequent processes are repeated.

Therefore, when the main chord progression data is read and the final chord step is reached, this code step is not read out, and the program returns to the 0th chord step again to repeat the same chord progression.

During the above autochord progression process, the performer can perform tempo up 5W105B or tempo down 5W10 in Fig. 3.
By operating 59, the tempo data register TRO value can be changed at 3517 in FIG. This process consists of 5
This is exactly the same as the tempo processing in step 502, and is shown in FIG. 7, which has already been explained.

Next, the operation when the rhythm is switched during the autochord progression process will be described. This processing is similar to the processing when the rhythm is switched during the operation of reproducing only the rhythm sound. However, in the auto chord progression mode, as already explained, the chord progression memory section 1 in FIG.
A rhythm header as shown in FIG. 16 is stored in 07, and when the rhythm is changed, the tempo data is also changed correspondingly. Therefore, it is necessary to add this processing.

That is, first, the determination of 31.007 in FIG. 10 is YE.
S, that is, if the rhythm changes at the right timing of the 16-step main rhythm pattern, the pattern change standby flag PTF is set in S1012 after the determination in 3100B becomes NO in normal mode.
was set to 0, but when processing the autocode progression, the judgment of 3100B was YES.

Subsequently, since the determination in S1009 becomes No (the value of the pattern register PR is currently O because it is the main rhythm pattern), the process advances to 51010. Here, similarly to the operation of 31104 in FIG. 11, the tempo data TD corresponding to the rhythm number set in the rhythm number register RR in 31006 of FIG.
Set to R. After this process, the pattern change standby flag PTF is set to O at 51012, and the various switching processes shown in FIG. 5 are completed at 31.013, as in the normal mode.

On the other hand, if the rhythm changes at a timing in the middle of the 16-step main rhythm pattern, in normal mode, 3904-39 in Fig. 9
By executing the process from 08-3909 to 5906, after the main rhythm pattern before the rhythm is switched, when the break comes at a good timing, 39 in FIG.
The judgment in S 09 was YES, and the judgment in S 9i0 was NO, and the pattern change standby flag PTF was set to 0 in 5913 to switch the rhythm. When the timing is right, after the judgment of 5909 in Fig. 9 becomes YES, 5
The determination at 910 is YES. Furthermore, since the determination of 5911 is NO (because the current value of PR is O), 5912
Proceed to step 1, which is the same as the operation at 104 in FIG. 11. At 31006 in FIG. 10, tempo data TD corresponding to the rhythm number set in the rhythm number register RR is set in the tempo data register TR. And then 59
At step 13, the pattern change standby flag PTF is set to 0.

As described above, when the rhythm changes, the contents of the tempo data register TR are changed to a new value, and thereafter, the timing at which the timer clock is manually activated is determined at 3515 in FIG. 5 according to the contents of this register. 551
At step 7, the speed at which Re2O3 in FIG. 1 is counted up is determined.

Note that if the rhythm changes at a timing in the middle of the 16-step main rhythm pattern, in the rhythm playback process of 8514 in FIG. The rhythm changes, and the main bass pattern in the bass playback process of 5512 and the main chord pattern in the chord playback process of 5513 are the same, but the main chord progression data in the auto chord progression process of 5511 does not change the rhythm. When the rhythm number register RR indicates a new rhythm number, the rhythm number register RR immediately switches to the main chord progression data corresponding to the new rhythm number indicated by the rhythm number register RR at step 31205 in FIG.

Fill-in to O chord S world Regarding the operation when the performer presses Fill-in 5W1056 in Figure 3 while the automatic accompaniment in the auto chord progression mode is being repeated by the loop of 35081 to 5518 in Figure 5 above. explain.

In this case, in the rhythm playback process of 8514 in FIG. 5, as in the normal mode, 3901-=
S914--3915-" By repeating the process of S906, when the fill-in 5W1056 is pressed, the main rhythm pattern immediately changes to the fill-in rhythm pattern. The same applies to the code pattern.

On the other hand, in the auto chord progression process of 5511, the contents of the progression register SR do not change just by pressing the fill-in 5W 1056, and the value 0, that is, indicates the main chord progression. Then, the rhythm playback process in Figure 9 (
In Figure 5 (3514), until the pattern step of the fill-in rhythm pattern reaches the final 15th pattern step and the determination in 5915 becomes YES, the SR content remains O, so the processing status in Figure 12 changes. This chord progression is maintained.

In the rhythm playback process shown in FIG. 9, when the pattern step of the fill-in rhythm pattern reaches the final 15th step and the determination in 5915 becomes YES, 891
At step 6, the pattern register PR is set to O and the routine returns to the main rhythm pattern. On the other hand, since the progress register SR is set to 1 in S917, the chord progression data becomes a fill-in chord progression. And 391B, 59
At step 19, the counter values of the chord counter CC and note length counter OC are forcibly reset to 0. At this time, the base pattern and the chord pattern have also returned to the main pattern in the bass playback process of 8512 and the chord playback process of 5513 in FIG.

As a result, the determination at 31201 in FIG. 12 becomes YES, and the determination at S 1202 becomes YES, so that
Proceed to step 15. Then, out of the fill-in chord progression data corresponding to the rhythm number indicated in the rhythm number register RR, a process is performed to read out the chord step indicated by the chord counter CCO counter value, that is, the Oth chord step.
9-31210→S 1211→512I2→S 12
13, the O-th chord step of the fill-in chord progression data is set, etc.

Below, it operates exactly the same as in the case of this chord progression data,
In the bass playback process 5512 and the chord playback process 5513 in FIG. 5, the scale and chord type are specified by the scale data OTD and chord name data CD of the 0th chord step based on the fill-in chord progression data, and this state is This continues until the pattern steps corresponding to the step's tone length data OD are repeated.

Then, when the value of the tone length counter OC is determined to be O at 31201 in FIG. 12, S 1201-31202 is performed again.
→S1215, the fill-in chord progression data of the next first step is read out, and the sound generation process is performed based on this data.

The above operation is repeated while sequentially reading out each code step of the fill-in chord progression data.
When the last chord step of the fill-in chord progression data is read out in step 216, the tone length data OD is expressed as #FN in hexadecimal as described above, so the determination in step 31216 becomes YES. As a result, the progress register SR is returned to O at the next step 31217, and the program returns to the main code progress mode.

Then, in 3121B, the chord counter CC is reset to O, and in S1205, the chord progression data of the 0th chord step of the main chord progression is read out, and from then on, the main chord progression is used.

An example of the above fill-in operation is shown in FIG. First, the rhythm pattern, bass pattern, and chord pattern are progressing in the main pattern as shown in the figure. Note that each break indicates a pattern step break for each 1G step. In addition, the chord progression data also progresses according to this chord progression. Each division indicates a division by a chord step that contains "F" as note length data OD.In this state, when a fill-in occurs at the timing shown in Figure 1-1, the rhythm pattern etc. immediately changes to a fill-in pattern. However, the chord progression data still maintains the regular chord progression. Then, when the rhythm pattern etc. reaches the break of 16 pattern steps at timing T2, the rhythm pattern etc. returns to the regular pattern from then on. for,
The chord progression data forcibly changes to a fill-in chord progression at T2, and returns to the main chord progression after proceeding in the fill-in chord progression until the break of the chord step at T3.

In this way, the fill-in of rhythm patterns etc. takes precedence,
This is followed by a fill-in of chord progression data because it produces a musically natural effect. Note that by setting the number of chord steps of the fill-in chord progression data to be shorter than that of the main chord progression data, the fill-in effect can be enhanced. This can be done by inserting the end code "F" as the tone length data OD of an early chord step that does not reach the 31st step in the fill-in chord progression data shown in FIG.

The operation when the performer presses the ending 5W 1057 in FIG. 3 while the automatic accompaniment in the auto chord progression mode is being repeated by the loop 35081 to 3518 in FIG. 5 will be described.

First, at the perfect timing of the main rhythm pattern of 16 chord steps, the ending 5W1057 is played.
When is pressed, in the various switching processes shown in FIG. 5 3518, the program proceeds to steps 31002 to 31016 in FIG.
Proceed to 07-3100B-31009-31011,
The counter values of note length counter OC and chord counter CC are reset to O, and the value 3 is set in progress register Srl. The process then proceeds to S1012, where the pattern change standby flag PTF is set to 0.

As a result of the above operation, in the rhythm playback process of 8514 in FIG. 5, since the pattern change standby flag PTFO value is 0, 5902→
Proceeding to S920-''S921, the ending rhythm pattern is read out sequentially from pattern step O.The same applies to the bass pattern and chord pattern in the bass playback process at 5512 and the chord playback process at 5513 in FIG.

On the other hand, in the auto chord progression process of 5511, S1201-S1202-31 in FIG.
Proceed to 203--31204 and the judgment of S1204 is Y.
ES and proceeds to S1219. Here, out of the ending chord progression data shown in FIG. 16 stored in the chord progression memo 1 section 107 shown in FIG. A process is performed to read the code step indicated by the counter value, that is, the O-th code step. And from now on, S 12
20-31210-31211-31212→S 12
13, the O-th code step of the ending chord progression data is set, etc.

Below, it operates exactly the same as in the case of this chord progression data,
In the bass playback process 8512 and the chord playback process 5513 in FIG. 5, sound is produced using the scale and chord type based on the ending chord progression data.

Next, if ending 5W1057 in FIG. 3 is pressed in the middle of the main rhythm pattern of 16 chord steps, in the various switching processes 3518 in FIG. A straight 3 is set in PR, and S 1007
-31008-31009-31010, and the pattern change standby flag PTF is set to 1.

As a result of the above operation, in the rhythm playback process of 5514 in FIG. 5, since the value of the pattern change standby flag PTF is 1, 5902 →
5920→5924 to read out the steps of the main rhythm pattern. The same applies to the bass pattern and chord pattern in the bass reproduction process 8512 and the chord reproduction process 5513 in FIG. 5.

On the other hand, in the auto chord progression process of 5511, since the value of the progression register SR is still O, indicating the main chord progression, reading of the above-described main chord progression data is continued. Therefore, in the bass playback process 5512 and the chord playback process 5513 in FIG. 5, the scale and chord type are specified and produced by the scale data OTD and chord name data CD of each chord step based on this chord progression data.

Then, the automatic accompaniment process by the loop from 35081 to 5518 in FIG. 5 is repeated, and when the value of Re2O3 in FIG. 1 reaches 15 at 3909 in FIG. . and,
Since the value of the pattern register PR is set to 3 in 31016 of FIG.
Proceed to step 5 and set note length counter OC and chord counter C.
The counter value of C is reset to 0, and the value 3 is set to the progress register SR. The process then proceeds to 5913, where O is set in the pattern change standby flag PTF.

After the above process, in the rhythm playback process of 3514 in FIG. 5, the value of the pattern change standby flag PTF becomes O, so the ending rhythm pattern is sequentially read out in the order of 5902 → 5920 → 5921, and as shown in FIG. The same applies to the base pattern and chord pattern in the base playback process of 3512 and the chord playback process of 5513. In addition, in the auto chord progression process of 5511, S 1201-31202-31203 in FIG.
→Proceeds to S1204, and the determination in S1204 becomes YES, proceeds to S1219, reads the ending chord progression data, and in the bass playback process 3512 and the chord playback process 5513 in FIG. - Pronunciation is performed depending on the chord type.

Then, when the automatic accompaniment process is repeated through the loop from 55081 to 5518 in FIG. 5, and the value of RCIO3 in FIG. 1 reaches 15, that is, when the next rhythm pattern to be generated becomes the final 15 steps. In step 5922, the determination is No, and in step 5923, the final step of the ending rhythm pattern is sounded.

After this operation, the process jumps from 5923 to the process of S1017 via the path shown in FIG. In addition, the ending chord progression is
Forced to end at the end of the ending rhythm pattern. Since the determination at 31017 in FIG. 10 is YES (the value of ACR is 1 in the autocode progression mode), various flags, counters, and registers are initialized at 31018 to 31025, and after that, the 11th The process jumps to steps 51105 and subsequent steps via the route marked with ■ in the figure, and the automatic accompaniment ends. After this process, 51105~
Repeat the process of 511091 and turn the star) SW in Figure 3.
1054, intro SWI 053 or rhythm 5W10
51 is pressed. Note that the initial settings of the rhythm number register RR and tempo data register TR are not performed, and when the star SW 1054 or the like is pressed next, automatic accompaniment starts with the previous rhythm number and tempo. Furthermore, the auto-operation flag AOF is not initialized, and automatic accompaniment starts in the same mode. Furthermore, in FIG. 11, since the autochord progression mode is on standby, the autochord progression flag ACR and the accompaniment flag BF remain as they were.

An example of the above ending operation is shown in FIG.

First, the rhythm pattern, bass pattern, and chord pattern are progressing in the main pattern as shown in the diagram, and
The chord progression data also progresses according to this chord progression. In addition,
The meaning of each break is the same as in FIG. 19. In this state,
When the ending occurs at timing T4 in the same figure, the rhythm pattern, bass pattern, and chord pattern all maintain this pattern until the end of 16 pattern steps, and the chord progression data also maintains this chord progression accordingly. do. Then, when the rhythm pattern etc. reaches the break of 16 pattern steps at timing T5, the rhythm pattern etc. thereafter shifts to the ending pattern, and the chord progression data is also forced to shift to the ending chord progression at T5. At timing T6, when the rhythm pattern, etc. has finished sounding for 16 pattern steps, the automatic accompaniment process is terminated, and at the same time, the ending chord progression is also forcibly terminated.

In this case, the ending chord progression data does not actually require 32 chord steps as shown in Fig. 16, and if the ending code ``''F#'' is inserted as the tone length data OD of several chord steps, good. Furthermore, the ending rhythm pattern of 16 pattern steps may be repeated several times to complete the ending rhythm pattern, and in this case, the ending chord progression data for 32 step steps may be entirely stored.

11 of the auto chord progression mode process of FIG. 5 8508
Through the loops 51106 to 51109 in the figure, the fifth
The operation when the performer presses the intro 5 WIO 53 in FIG. 3 to start the autochord progression process 3511 in the figure will be described.

In this case, first, the determination of 51106 in FIG. 11 is YES.
The program then proceeds to step 31113, where the value 2 is set in the pattern register PR and progress register SR, and the intro rhythm pattern mode is entered. After that, the start 5W
31110 in the same way as when you press 1054 (Figure 3)
The process then proceeds to the autochord progression process shown in FIG. 5 3512.

Hereinafter, by loops 55081 to 5518 in Fig. 5,
The automatic accompaniment in auto chord progression mode is repeated, but
In the rhythm playback process of 5514 in FIG. 5, as in the normal mode, 5902-8926→S in FIG.
By repeating the process of 927-3906,
Automatic accompaniment starts with the intro rhythm pattern. Then, the automatic accompaniment with the intro pattern is repeated for 16 pattern steps, and the value of Re2O3 (Figure 1) is 1.
When the rhythm pattern reaches 5, the determination at 8927 becomes YES, and at 8928, the pattern register PR is set to O, and the transition to the main rhythm pattern occurs. The same applies to the base pattern and chord pattern in the bass reproduction process 3512 and chord reproduction process 3513 in FIG. 5.

Next, in the auto chord progression process of 5511, the value of the progression register SR becomes 2 by pressing the intro 5W 1053, and since the value of the note length counter OC is O at the start as already explained, 12th
After the determination at 31201 in the figure becomes YES and the determination at S 1202 becomes NO, the determination at 51203 becomes YES and the process advances to S 1221. Here, among the intro chord progression data corresponding to the rhythm number indicated by the rhythm number register RR, the chord counter CC
The process of reading out the code step indicated by the O counter value, that is, the 0th code step is performed. From now on, S 121
6→S 1209→S 1210→S 1211→S
The process proceeds from 1212 to S 12i3, and the O-th chord step of the intro chord progression data is set.

Below, it operates exactly the same as in the case of this chord progression data,
In the bass playback process 8512 and the chord playback process 5513 in FIG. 5, the scale and chord type are specified by the scale data OTD and chord name data CD of the O-th chord step based on the intro chord progression data, and this state is the first This continues until the pattern steps corresponding to the step's tone length data OD are repeated.

Then, note length counter OCO is set at 31201 in Figure 12.
If the value is determined to be 0, S 1201-31202 again
→S1203→S1221, the intro chord progression data of the next first step is read out, and the sound generation process is performed based on this.

The above operation is repeated while sequentially reading out each code step of the intro chord progression data.
6, when the last chord step of the intro chord progression data is read out, the tone length data OD (see Figure 18)
is F” in hexadecimal representation, so S 1216
The determination becomes YES.

As a result, the progress register SR is returned to O at the next step 31217, and the code progress mode is entered. And 31
At 21B, the code counter CC is reset to O, and S
At step 1205, the chord progression data for the 0th chord step of the main chord progression is read out, and from then on, the main chord progression will be used.

An example of the above intro operation is shown in FIG.
If you start with , the rhythm pattern, bass pattern, and chord pattern will start with the intro pattern, and the chord progression data will also start with the intro chord progression.

In this case, the rhythm pattern, etc. ends the intro pattern in 16 pattern steps and transitions to the main pattern at timing T8, but the chord progression data includes the chord "'F" as note length data OD (see Figure 18). The intro pattern is repeated until the chord step where " is stored, and the main chord progression starts after timing T9. Therefore, the length of the intro such as a rhythm pattern and the intro of the chord progression data may be different. Note that, of course, the lengths can also be set to be the same.

When the stop SW is pressed by Tomo Sakai Kane while the automatic accompaniment in the auto chord progression mode is being repeated by the loop from 55081 to 5518 in Figure 5 above, the performer presses stop 5W1055 in Figure 3. The operation in this case will be explained.

In this case, in the various switching processes 3518 in FIG.
The determination in Figure 10 31003 is YES and 51017
Proceed to. Then, since the determination in S1017 is YES (the value of ACR is O in the auto chord progression mode), the process advances to 3101B. After this, ending 5W
The automatic accompaniment is ended in the same way as the automatic accompaniment ending process when 1057 (FIG. 3) is pressed.

(Auto Operation Mode) Next, the auto operation mode particularly related to the present invention will be explained.

First, the FCRioii of Figure 1 shown in Figure 13 above.
In addition to what was explained in the case of automatic accompaniment in the normal mode and auto chord progression mode, things related to the operation in the auto operation mode are listed below.

Operation tone length counter 00C (Figure 13 (E)
); Counter that subtracts and counts the length of each step in the progress of auto operation mode. Operation step counter 05C (Figure 13 (b)); Counter that counts up the address of auto operation data. The following is an explanation of the operation of auto operation mode. I do.

Auto-operation As already explained, in the state where the LED on auto-operation mode 5W1061 in FIG. Also, the performance tempo can be arbitrarily changed during the performance using the tempo up 5WIO58 or tempo down 5W1059 shown in FIG. In addition, although it was not specifically shown in the explanation of the normal mode or auto chord progression mode during automatic accompaniment, the performer can
By pressing any of the tone color changeover switches 1060 #3, the melody tone can be arbitrarily selected. Furthermore, as already explained, performance effects such as an intro, a fill-in, and an ending can be added using the intro 5W1053, fill-in 5WI056, and ending 5W1057 shown in FIG.

On the other hand, in the auto operation mode, the tempo and melody/timbre are automatically changed and specified in either the normal mode or the auto chord progression mode, independently of the above-mentioned switch operations.
Furthermore, intro, fill-in, and ending performance effects are automatically added.

In order to realize the above operation, the auto-operation memory section 113 connected to the CPU101 in FIG.
4 For each rhythm #1 to #6 as shown in Figure 4, 0 to maximum 3
Auto operation data consisting of a maximum of 32 steps of 1 is stored.

FIG. 25 shows autooperation data for each of the 32 steps in FIG. 24. The edit data ED specifies intro, fill-in, or ending using 2-bit binary data of ``01''''10''''11''. Also, 00# is unchanged.

Tempo change data T HD is 2 bits '01' 10
Each binary data of `` specifies tempo up or tempo down. 00'' means no change. The melody tone data TOD is, for example, 3 by 2 bits of 2 progress data.
Specify the type of melody tone.

Operation note length data OOD is 4-bit binary data that specifies how long each melody tone is to be sounded, and its minimum unit is one step of the rhythm pattern, such as 16th note, 8th note, etc. etc.

Then, operation tone length data OO for each step
As will be described later, D is subtracted during sound generation, and when it becomes 0, the process moves to the next step. Note that the operation tone length data 00 for an appropriate step up to the 31st step
'1111' (1 in hexadecimal notation) indicates the end.
F#) data is included, and a melody tone of any step length can be specified by using the following steps except this step.

In this case, the steps in FIG. 24 or 25 are as follows:
This is a plurality of steps such as a rhythm pattern defined by operation note length data OOD, which is independent of the pattern step shown in FIG. 14 or 15 or the chord step shown in FIG. 16 or 18. Hereinafter, this will be referred to as an operation step. Therefore,
The bass pattern and chord pattern repeat 16 pattern steps for each measure, and the chord progression data that defines the bass pitch and chord type at that time is, for example, the first 8 pattern steps of the first measure are the C chord, the next 8 pattern steps are is an Am chord...The automatic accompaniment in the auto chord progression mode progresses while the chord is specified, and furthermore, when operating in the auto operation mode, the chord is specified by the operation tone length data OOD in Figure 25. The melody tone is changed and specified at intervals of the operation note length data oOD of each operation step, and at the same time, the tempo is changed or a performance effect is arbitrarily added.

Details for realizing the operation in the auto-operation mode will be explained based on the operation flowcharts of FIGS. 22 and 23.

Auto operation mode First, Fig. 22 is 35031 in Fig. 5 or 81 in Fig. 11.
10 is an operation flowchart of auto operation mode processing of 1091. Here, the already explained FIG.
In the automatic accompaniment start standby state in the normal mode of 02 to 5506 or the automatic accompaniment start standby state in the auto chord progression mode of Fig. 11 51105 to 311091, the auto operation mode 5W of Fig. 3
When the switch 1061 is pressed, the mode is switched from the normal operation mode to the auto operation mode, and conversely, when the switch is pressed in the auto operation mode, the process is switched from the auto operation mode to the normal operation mode.

That is, in the process of FIG. 22 at 8503 in FIG. 5, first, in the initial process of 3501 in FIG.
36021 in Fig. 6) is in normal operation mode, and if auto operation mode 5W1061 in Fig. 3 is pressed in this state,
The determination in S 201 becomes YES, and the determination in S 2202 also becomes YES.

As a result, the process advances to S2203, where the auto-operation flag AOF is set to a value of 1, and the process shifts to auto-operation mode.In S2204, the LED above the auto-operation mode 5W1061 in FIG. 3 is turned on.

Subsequently, in S2205, the first step of the auto-operation data corresponding to the rhythm number indicated by the rhythm number register RR, among the operation data shown in FIG. 24 stored in the auto-operation memory section 113 shown in FIG. The process of reading the Oth step is performed. Then, in step 32206, the melody tone number indicated by the melody tone data TOD of the Oth step is set in the melody tone generator 109 of FIG.

35031 in FIG. 5 via S 2209 after the above operation.
Terminates auto operation mode processing.

Meanwhile, in the auto operation mode, the third
When auto operation data 5W1061 in the figure is pressed, after the determination of 32601 becomes YES, S2
The determination at step 602 is NO.

As a result, the value of the auto operation flag AOF is set to O in 32607 to return to the normal operation mode, and the LED above the auto operation mode 5W 1061 in FIG. 3 is turned off in 32608.

Auto-operation process Next, the auto-operation process shown in FIG. 5 35082 will be explained. This process is performed when the auto operation flag AOF is set to 1 in the auto operation mode process.
The rhythm counter 103 in FIG. 1 is counted up at 5516, and is executed every time the automatic accompaniment loop processing from 55081 to 5518 is repeated. . Therefore, it is executed in both the normal mode and auto chord progression mode during automatic accompaniment.

FIG. 23 shows an operational flowchart of the auto-operation process.

First, the determination 52301 is the beginning of the 0th operation step when automatic accompaniment starts, and the operation note length counter 00C is 0 in the initial processing of 3501 in FIG.
(6091 in Figure 6), or when the operation note length counter 00C is decremented by the operation note length data 00D of each step (described later) and its value becomes 0. The determination is YES.

Subsequently, in S2302, the operation step counter is set using the auto-operation data corresponding to the rhythm number indicated by the rhythm number register RR, out of the auto-operation data shown in FIG. 24 stored in the auto-operation memory section 113 shown in FIG. 05C
The process of reading out the operation step indicated by the O counter value is performed.

Here, when the operation step counter O3C is 0, that is, when reading the Oth step, the melody tone data TOD has already been set at 32206 in FIG. 22 related to the auto operation mode processing in FIG. 5 35031 or FIG. Since it has already been read out, the readout is not performed, and the determination in S2303 is YES, and the process advances to S32305. In other cases, in S2304, the melody tone number indicated by the melody tone data TOD is
The melody sound generator 109 shown in FIG. 1 is set. This changes the melody sound at the beginning of each step.

Next, the content of the tempo change data THD of each step is determined. If the value of THD is 0, S 2305 and S
If both judgments in 2307 are No and tempo control is not performed, but the THDO value is 1 ('01' in binary),
The determination in step S2305 is YES, and in step 32306, the tempo data register TRO value is incremented by 1. As a result, a tempo up operation is performed that is exactly the same as 8704 in FIG. 7, which corresponds to the player's operation of tempo up 5WI058 in FIG.

On the other hand, if the THDO value is 2 ('10' in binary), the determination in S2307 is YES and the value of the tempo data register TR is -1 in 32308.As a result,
A tempo down operation exactly the same as that shown in FIG. 7 8705 corresponding to the player operating tempo down 5W 1059 in FIG. 3 is performed.

As mentioned above, each operation tone length counter OOC
At the beginning of each operation step where the value of is 0, along with the melody tone change process, a tempo change process that is exactly the same as the tempo process 3517 in FIG. 5 is performed using the tempo change data THD of that step.

Subsequently, in S2309, the operation tone length counter 00C is set to the operation tone length data 00D of that operation step.

Furthermore, until the final step, the determination in 32310 becomes NO and the process proceeds to 32311. Below, 52311.52
In each of the determinations 315 and 32317, an intro instruction, fill-in instruction, or ending instruction is determined based on the value of edit data ED of each step in the auto operation mode.

When the value of edit data ED is 1, the judgment of 32311 is YES, and when automatic accompaniment in normal mode, 5
The determination at 2312 is YES, and 2 is set in the pattern register PR at 32314. And S 23
24 and S 2325 (described later), 323
26, the process of FIG. 5 35082 ends.

As a result, when automatic accompaniment starts in normal mode, the third
Figure 5 8 when intro SWI O53 is pressed
Processing similar to step 507 is performed, and the intro performance starts. After this, the intro performance proceeds in exactly the same way as when the intro SW is pressed in the normal mode, which has already been explained. On the other hand, during automatic accompaniment in the auto chord progression mode, the determination in 52312 is NO, 2 is set in the progression register SR in 32313, and 2 is set in the pattern register PR in 32314. And S
After the processing of S 2324 and S 2325 (described later),
The process of 35082 in FIG. 5 is terminated via 32326. As a result, the same process as in S1113 and S1114 in FIG. 11 is performed when the intro 5W1053 in FIG. 3 is pressed at the start of automatic accompaniment in the auto chord progression mode, and the intro performance starts. After this, the intro performance proceeds in exactly the same manner as when the intro SW is pressed in the auto chord progression mode described above.

In addition, in the auto operation mode, the intro SWI O53 or start swi shown in FIG.

54 to start automatic accompaniment, the operation is the same, and the progress of the performance is forcibly determined by the edit data ED in FIG. 25.

When the value of the edit data ED is 2, the determination at 52315 is YES, and 1 is set in the pattern register PR. After the processing of S 2324 and S 2325 (described later), the process 8508 in FIG.
2 ends. As a result, when fill-in SWI O56 in FIG. 3 is pressed during automatic accompaniment in normal mode or auto chord progression mode, the 3518 in FIG.
The same process as in FIG. 10 31015 is performed, and the transition is made to fill-in performance. After this, the fill-in performance proceeds in exactly the same manner as when the fill-in SW is pressed in the normal mode or the auto chord progression mode, which has already been described.

If the value of the edit data ED is 3, the determination in 52317 is YES, and the processes in 32318 to S2323 are performed. This process is substantially as shown in FIG.
This is exactly the same as the processing from -31007 to S1014.

After the processing in S 2324 and S 2325 (described later), the processing in FIG. 5 35082 is ended via S 2326.

As a result, when the ending 5W1057 in FIG. 3 is pressed during automatic accompaniment in normal mode or auto chord progression mode, the 310 in FIG.
16-S The same processing as in S L007 to S1014 is performed, and the process shifts to the ending performance. After this, the ending performance proceeds in exactly the same manner as when the ending SW is pressed in the normal mode or auto chord progression mode, which has already been described.

As described above, through the processes 52311 to 32317, at the beginning of each operation step, the process of changing the melody tone color and the process of adding a performance effect based on the edit data ED are performed. When this process is finished, S23
The value of the operation step counter O3C is incremented by 1 in step S24, and the value of the operation note length counter O0C is incremented by -11 in step S2325, and the process of FIG. 5 35082 is ended through the process of S2326.

After the above operation, the loop of 5509 to 5518 in FIG. 5 is repeated to execute automatic accompaniment, and the determination in 35081 is Y.
The process becomes ES and the process of 35082 is repeated again. In this case, the operation tone length counter 00C is set with the operation tone length data OOD of each step, and by repeating the processing of S2301-S2325, it is decremented by 1 each time the pattern step advances. The value of note length counter 00C is O
Then, the determination in 52301 becomes YES again, and processing based on the auto-operation data corresponding to the next operation stage is performed. That is, the operation tone length data OOD of each operation step is
The length of one type of melody tone and the interval at which tempo control or performance effects are added are determined. If you only want to control the tempo or add a performance effect without changing the melody tone, you can specify, for example, a value indicating no change as the melody tone data TOD in Figure 25. If you only want to change the tempo or add performance effects, change the value of the tempo change data THD or the edit data ED to a value that indicates no change.
”.

Repeat the above operation, and the value of the operation note length counter 00C of the read operation step becomes 'F.
' (hexadecimal number), since that step is the final step, the determination at 32310 becomes YES, and the automatic accompaniment is forcibly terminated via step 31017 in FIG.

As described above, in the auto operation mode, the melody tone change, tempo control, intro instruction, fill-in instruction, etc. determined by the auto operation data shown in FIG.
Performance effects such as ending instructions can be added automatically.

Next, the operation of another embodiment of the present invention will be explained. In another embodiment described below, fill-in 5W1056 and intro 5W105 in FIG.
This relates to the operation when 3 is pressed. In this case, the operation flowchart of the rhythm playback process in FIG.
The operation flowchart of the autochord progression process shown in FIG. 12 is replaced with that of the other embodiment shown in FIG. 27. Below, Figure 26 and 2
In FIG. 7, the explanation will focus on the parts with different process numbers from those in FIGS. 9 and 12.

Note that in the following, the case of normal operation mode will be explained, and finally, the auto operation mode will also be mentioned.

Fill-in switch for auto chord First, when the performer presses the fill-in 5W1056 in Fig. 3 while the automatic accompaniment in the auto chord progression mode is being repeated by the loop of S5081-S518 in Fig. 5, The operation of another embodiment will be explained with reference to the operation explanatory diagram of FIG. 28.

Note that since the operation is in the normal operation mode, the determination at 35081 in FIG. 5 is NO, and the determination at 35082 is NO.
Auto-operation processing is not performed.

First, in Figure 28, the rhythm pattern, bass pattern, and chord pattern are progressing according to the regular pattern as shown in the figure, and the chord progression data is also progressing according to the regular chord progression, and at the timing of TIO in the diagram. When fill-in occurs, in the rhythm playback process of 3514 in FIG. 5, 5901→S 914-S 9 of FIG.
Since the processing of 15-3906 is the same as in FIG. 9, the rhythm pattern etc. immediately changes to the fill-in pattern, but the chord progression data still maintains the regular chord progression.

This is similar to the operation at timing T1 in FIG. 19.

Next, when the rhythm pattern etc. reaches the break of 16 pattern steps at the timing of Tll in FIG. 28, as shown in FIG.
In the rhythm playback process of 514, 3915 of FIG.
The processing of -3916 is the same as in Figure 9, and the value of the current progress register SR is 0, so the determination of 52601 (7) is Y.
ES, and then the processing of 3917 to 5919 is the 9th
Since it is the same as the diagram, the rhythm pattern etc. will return to the regular pattern after that, and the chord progression data will be forcibly changed to the fill-in chord progression at Tll. After that, the 27th
Figure S 1202-31215-32701-3122
0-31210 (7) processing continues the fill-in chord progression. This process is shown in FIG. 9 (7) S120
2- S 1215- S 1216- S 1209
- Substantially the same as the processing in S1210. As described above, the processing at timing T11 is the same as the operation at timing T2 in FIG. 19.

However, when the fill-in chord progression data reaches the code step break at timing T12 in FIG. 28, in the embodiment shown in FIG.
Since the value of S270 is returned to O, the main code progression is returned to. However, in the other embodiment shown in FIG.
At step 3, the readout of the fill-in chord progression data from the O-th code step is repeated again. Therefore, unlike the case of the timing of T3 in FIG. 19, the timing of T12 in FIG.
Then, the fill-in chord progression continues as is. This state is repeated until the player presses fill-in 5W1056 (FIG. 3) again.

Then, when the fill-in 5 WIO 56 is pressed again at T13 in FIG. 28, the rhythm pattern etc. immediately shifts to the fill-in pattern as before, and when the 16 pattern steps break at T14 in FIG.
The process returns to the main pattern by processing steps 5915→5916 in FIG.

On the other hand, the chord progression data is
Even if the fill-in 5W 1056 is pressed at step 13, the value of the progress register SR does not change, so the fill-in code continues to progress. Then, when the rhythm pattern becomes a 16 pattern step break at T14 in FIG. 28 and returns to the main pattern, 5915→5916→S2 in FIG.
The process proceeds as follows: 601→S 2602→32603→S 2604, and the value of the progress register SR is returned to 0. Therefore, for the first time, the chord progression data returns from the fill-in chord progression to the main chord progression.

As shown in FIG. 28, fill-in 5W1056
When (FIG. 3) is pressed once (TIO), the rhythm pattern etc. will first go into the fill-in state, and then, at the timing when the rhythm pattern returns to the main pattern (Tll), the chord progression will go into the fill-in state.

The fill-in state of the chord progression is maintained, and at the timing when fill-in 5W1056 is pressed again (
T13), the rhythm pattern etc. enters the fill-in state again, and then at the timing when the rhythm pattern returns to the main pattern (T14), the chord progression data returns to the main chord progression.

The above operation allows the performer to freely control the duration of the fill-in chord progression. Note that for rhythm patterns, etc., it is better to return to the original pattern after 16 steps to obtain a better musical effect.

Next, when the performer starts the autochord progression process 3511 in FIG. 5 through the loop 31106 to 51109 in FIG. 11 of the autochord progression mode process 5508 in FIG. The operation of another embodiment when started by pressing 5W1053 will be explained along FIG. 29.

In this case, first, in FIG. 29, when the intro 5W 1053 is pressed at timing T15, the value 2 is first set in the pattern register PR and progress register SR at 31113 in FIG. 11, as in the case of the previous embodiment. to enter intro rhythm pattern mode.

Hereinafter, the loop from 35081 to 5518 in FIG.
Since the processing is the same as in FIG. 9, automatic accompaniment starts with the intro rhythm pattern. That is, the processing at timing 715 in FIG. 29 is similar to the operation at timing T7 in FIG. 21. Then, the automatic accompaniment with the intro pattern is repeated for 16 pattern steps, and when the value of Re2O3 (Fig. 1) reaches 15 at the timing of T16 in Fig. 29, the processing from 5927 to 5928 in Fig. 26 is performed as shown in Fig. 9. Therefore, the pattern register PR is set to 0 in 5928 and the transition to the main rhythm pattern is made. This is similar to the operation at timing T8 in FIG. 19.

Next, in the auto chord progression process of 3511 in FIG. 5, S 1203 → 31221 → S 1216 in FIG.
→Since the process at 51209 is the same as that in FIG. 12, automatic accompaniment starts with the intro chord progression. Therefore, regarding the autochord progression process, the process at the timing 715 in FIG. 29 is the same as the process at the timing T7 in FIG. 21.

However, when the intro chord progression data reaches the chord step break at timing 717 in FIG. 29, the determination in 51216 is Y in the embodiment shown in FIG.
After becoming ES, the value of the progress register SR was returned to 0 in S1217, so the main code progression was started, but the second
In the other embodiment shown in FIG. 7, after the determination in step 31216 becomes YES, the value of the progress register SR does not change, and the step S2704
Then, reading of the intro chord progression data from the 0th chord step is repeated again. Therefore, T in Figure 21
Unlike the case at timing 9, at 717 in FIG. 29, the intro chord progression continues as is. In this state, the performer must once again fill in the fill-in 5W1056 (Fig. 3).
Repeats until you press .

Then, when the fill-in 5 WIO 56 is pressed again at 718 in FIG. 29, the rhythm pattern etc. immediately shifts to the fill-in pattern as before, and when the 16 pattern step breaks at 719 in FIG.
The process returns to the main pattern by processing steps 5915→5916 in FIG.

On the other hand, the chord progression data is
Even if the fill-in 5W 1056 is pressed at 1B, the value of the progress register SR does not change, so the intro chord progression continues. And the rhythm pattern is 7 in Figure 29.
When the 16 pattern steps are separated at 19 and the pattern returns to the main pattern, 5915 → 5916 → 5260 is shown in Figure 26.
1→S 2602→S 2604, and the value of the progress register SR is returned to O.

Therefore, for the first time, the chord progression data returns from the intro chord progression to the main chord progression.

Above, as shown in Figure 29, Intro 5WI053 (
When the rhythm pattern starts (T15) in FIG. 3, both the rhythm pattern and the chord progression data go into the intro state, and then the rhythm pattern returns to the main pattern at the timing of T16. On the other hand, the intro state of the chord progression is maintained, and at the timing when the fill-in 5W1056 is pressed again (71B), the rhythm pattern etc. becomes the fill-in state again, and then at the timing when the rhythm pattern returns to the main pattern (T19), The chord progression data returns to the main chord progression.

The above operation allows the performer to freely control the duration of the intro chord progression.

Although the operations described above are for the normal operation mode, the operation flowcharts shown in FIGS. 26 and 27 apply in the same manner to the auto operation mode. That is, FIG. 5 3508 or FIG. 11 3
The auto operation mode process in FIG. 22 related to 11091 and the auto operation process in FIG. 23 related to 35082 in FIG.
(see Fig. 25),
The same operation as that shown in FIG. 28 or 29 can be performed automatically.

〔Effect of the invention〕

According to the present invention, it is no longer necessary for the performer to specify each melody tone in accordance with the selection of an accompaniment pattern.

Furthermore, there is no need to specify the melody tone one by one as the automatic accompaniment progresses.

In this way, since all melody tones are specified automatically, even beginners can easily enjoy advanced automatic accompaniment.

Note that, for example, when the performer selects an accompaniment pattern using the accompaniment pattern selection means and starts automatic accompaniment at the same time, the operation at the time of starting automatic accompaniment can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the present invention; FIG. 2 is an external configuration diagram of a keyboard section; FIG. 3 is an external configuration diagram of a switch section; FIG. 4 is a data configuration diagram of key information; 5 is a main operation flowchart, FIG. 6 is an operation flowchart for initial processing, FIG. 7 is an operation flowchart for tempo processing, FIG. 8 is an operation flowchart for initial rhythm switching processing, and FIG. 10 is an operational flowchart of rhythm playback processing, FIG. 10 is an operational flowchart of various switching processes, FIG. 11 is an operational flowchart of autochord progression mode processing, and FIG. 12 is an operational flowchart of autochord progression processing. Flowchart diagram, Figures 13(a) to (0) are configuration diagrams of the flag/counter register group (FCR), Figure 14 is a configuration diagram of the pattern memory section, and Figure 15(a).
) to (C) are data configuration diagrams of each pattern, Figure 16 is a configuration diagram of the chord progression memory section, Figure 17 is a data configuration diagram of tempo data, and Figure 18 is a data configuration diagram of each chord progression data. 19 is an explanatory diagram of fill-in operation, FIG. 20 is an explanatory diagram of ending operation, FIG. 21 is an explanatory diagram of intro operation, FIG. 22 is an operational flowchart of auto operation mode processing, and FIG. 24 is a block diagram of the auto operation memory unit, FIG. 25 is a block diagram of the auto operation data, and FIG. 26 is the operation of the rhythm playback process in another embodiment. Flowchart diagram, FIG. 27 is an operation flowchart diagram of autochord progression processing in another embodiment, FIG. 28 is an explanatory diagram of fill-in operation in another embodiment, and FIG. 29 is an explanation diagram of intro operation in another embodiment. It is a diagram. 101... Central control unit (CPU), 102... Timer clock, 103... Rhythm counter (RC), 104... Keyboard section, 105... Switch section, - Pattern memory section, - Chord progression Memory section, -Chord judge section, -Accompaniment sound generation section, -Rhythm sound generation section 111, -Sound system, -Auto operation memory section.

Claims (1)

[Scope of Claims] 1) Accompaniment pattern storage means for storing a plurality of predetermined accompaniment patterns; accompaniment pattern selection means for causing a performer to select one of the plurality of accompaniment patterns; and accompaniment pattern selection means. automatic accompaniment control means for reading out the selected accompaniment pattern from the accompaniment pattern storage means and performing automatic accompaniment; melody playing means for causing a performer to play a melody in parallel with the automatic accompaniment; and the plurality of sets of accompaniment. melody tone storage means for storing melody tone specification data corresponding to each of the patterns; and melody tone specification data corresponding to the accompaniment pattern selected by the accompaniment pattern selection means are read from the melody tone color storage means, and the melody tone specification data is read out from the melody tone color storage means, An automatic accompaniment device comprising: melody tone control means for specifying a melody tone when a melody is played by the melody playing means using data. 2) The automatic accompaniment device according to claim 1, wherein the automatic accompaniment control means starts automatic accompaniment when the performer selects an accompaniment pattern using the accompaniment pattern selection means. 3) automatic accompaniment control means that performs automatic accompaniment based on a predetermined accompaniment pattern; melody performance means that causes a performer to perform a melody in parallel with the automatic accompaniment; and melody performance means that corresponds to each scene of the progression of the accompaniment pattern. a melody tone storage means for storing melody tone specification data; and according to the progress of automatic accompaniment by the automatic accompaniment control means, corresponding melody tone specification data is read from the melody tone storage means, and the melody is played using the melody tone specification data. An automatic accompaniment device comprising: melody tone control means for sequentially specifying a melody tone when the melody is played by the means.